{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T22:55:41Z","timestamp":1783378541991,"version":"3.54.6"},"reference-count":37,"publisher":"Oxford University Press (OUP)","issue":"12","license":[{"start":{"date-parts":[[2023,10,16]],"date-time":"2023-10-16T00:00:00Z","timestamp":1697414400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81871206"],"award-info":[{"award-number":["81871206"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,12,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>STUDY QUESTION<\/jats:title>\n                  <jats:p>Can emergency vitrification protect embryos and oocytes during natural disasters or other events that prevent normal practice to achieve satisfactory embryonic development and clinical outcomes at a later time?<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>SUMMARY ANSWER<\/jats:title>\n                  <jats:p>Emergency vitrification of oocytes and Day 0\u2013Day 5 (D0\u2013D5) embryos during disasters is a safe and effective protective measure.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>WHAT IS KNOWN ALREADY<\/jats:title>\n                  <jats:p>When some destructive events such as floods, earthquakes, tsunamis, and other accidents occur, emergency vitrification in embryo laboratories to protect human embryos, oocytes, and sperm is one of the important measures of an IVF emergency plan. However, there are few detailed reports on emergency vitrification in a state of disaster, especially about oocytes and D0 zygotes. Therefore, the effectiveness and safety of emergency vitrification of oocytes and D0\u2013D5 embryos in disaster states are still unclear.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>STUDY DESIGN, SIZE, DURATION<\/jats:title>\n                  <jats:p>A retrospective study was made in the Reproductive Medicine Center of the First Affiliated Hospital of Zhengzhou University from January 2018 to November 2022. The record rainstorms in Zhengzhou, China, caused severe flooding, traffic disruptions, and power outages. From 17:30, 20 July 2021 to 17:30, 21 July 2021, 1246 oocytes and D0\u2013D5 embryos of 155 patients were vitrified whilst the laboratory had only an emergency power supply.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>PARTICIPANTS\/MATERIALS, SETTING, METHODS<\/jats:title>\n                  <jats:p>As of 21 December 2021, 1149 emergency vitrified oocytes and D0\u2013D5 embryos of 124 patients underwent frozen-thawed embryo transfer (FET). They were divided into the following four groups according to the days of embryo culture in vitro: oocyte group, Day 0\u2013Day 1 (D0\u2013D1) group, Day 2\u2013Day 3 (D2\u2013D3) group, and Day 4\u2013Day 5 (D4\u2013D5) group. Control groups for each were selected from fresh cycle patients who underwent IVF\/ICSI from January 2018 to October 2021. Control and emergency vitrification patients were matched on criteria that included age, fertilization method, days of embryonic development, and number and grade of transferred embryos. A total of 493 control patients were randomly selected from the eligible patients and matched with the emergency vitrification groups in a ratio of 4:1. The results of assisted reproduction and follow-up of pregnancy were analyzed. The embryonic development, clinical outcomes, and birth outcomes in each group were statistically analyzed.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>MAIN RESULTS AND THE ROLE OF CHANCE<\/jats:title>\n                  <jats:p>A significant difference was observed in fertilization rate (81% versus 72%, P\u2009=\u20090.022) between the oocyte group and the control group. Significant differences were also observed in the monozygotic twin pregnancy rate (10% versus 0%, P\u2009=\u20090.038) and ectopic pregnancy rate (5% versus 0%, P\u2009=\u20090.039) between the D0\u2013D1 group and the control group. No significant differences (P &amp;gt; 0.05) were observed between vitrified oocytes\/D0\u2013D1 embryos\/D2\u2013D3 embryos and the control group on the number of high-quality embryos (3.17\u2009\u00b1\u20093.00 versus 3.84\u2009\u00b1\u20093.01, P\u2009=\u20090.346; 5.04\u2009\u00b1\u20093.66 versus 4.56\u2009\u00b1\u20092.87, P\u2009=\u20090.346; 4.85\u2009\u00b1\u20095.36 versus 5.04\u2009\u00b1\u20094.64, P\u2009=\u20090.839), the number of usable blastocysts (1.22\u2009\u00b1\u20091.78 versus 1.21\u2009\u00b1\u20092.03, P\u2009=\u20090.981; 2.16\u2009\u00b1\u20092.26 versus 1.55\u2009\u00b1\u20092.08, P\u2009=\u20090.090; 2.82\u2009\u00b1\u20093.23 versus 2.58\u2009\u00b1\u20093.32, P\u2009=\u20090.706), clinical pregnancy rate (56% versus 57%, P\u2009=\u20090.915; 55% versus 55%, P\u2009=\u20091.000; 40% versus 50%, P\u2009=\u20090.488), miscarriage rate (30% versus 15%, P\u2009=\u20090.496; 5% versus 11%, P\u2009=\u20090.678; 17% versus 20%, P\u2009=\u20091.000), and live birth rate (39% versus 49%, P\u2009=\u20090.460; 53% versus 50%, P\u2009=\u20090.772; 33% versus 40%, P\u2009=\u20090.635). No significant differences (P &amp;gt; 0.05) were observed between the D4\u2013D5 group and the control group on clinical pregnancy rate (40% versus 55%, P\u2009=\u20090.645), miscarriage rate (0% versus 18%, P\u2009=\u20091.000), and live birth rate (40% versus 45%, P\u2009=\u20091.000)<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>LIMITATIONS, REASONS FOR CAUTION<\/jats:title>\n                  <jats:p>The retrospective study design is a limitation. The timing and extent of natural disasters are unpredictable, so the sample size of vitrified oocytes, zygotes, and embryos is beyond experimental control.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>WIDER IMPLICATIONS OF THE FINDINGS<\/jats:title>\n                  <jats:p>This study is the first study analyzing embryonic development, clinical outcomes, and birth outcomes of large samples of oocytes, D0 zygotes, and D1\u2013D5 embryos after emergency vitrification under the disaster conditions. The results show that emergency vitrification is a safe and effective protective measure applicable to oocytes and D0\u2013D5 embryos. The embryology laboratories need to be equipped with an emergency uninterrupted power supply capable of delivering for 6\u20138\u2009h at full load.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>STUDY FUNDING\/COMPETING INTEREST(S)<\/jats:title>\n                  <jats:p>This work was supported by the National Natural Science Foundation of China (grant 81871206). The authors declare that they have no conflicts of interest. All authors have completed the ICMJE Disclosure form.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>TRIAL REGISTRATION NUMBER<\/jats:title>\n                  <jats:p>N\/A.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/humrep\/dead210","type":"journal-article","created":{"date-parts":[[2023,10,17]],"date-time":"2023-10-17T11:55:31Z","timestamp":1697543731000},"page":"2412-2421","source":"Crossref","is-referenced-by-count":3,"title":["Effective protection: the embryonic development and clinical outcomes of emergency vitrification of 1246 oocytes and Day 0\u2013Day 5 embryos in a natural disaster"],"prefix":"10.1093","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6763-6394","authenticated-orcid":false,"given":"Wenyan","family":"Song","sequence":"first","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fuli","family":"Zhang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Wang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-5113-3341","authenticated-orcid":false,"given":"Hao","family":"Shi","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Sun","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haixia","family":"Jin","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaopeng","family":"Wang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3705-8065","authenticated-orcid":false,"given":"Yihong","family":"Guo","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9913-7968","authenticated-orcid":false,"given":"Linli","family":"Hu","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Zhai","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shanjun","family":"Dai","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yile","family":"Zhang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5552-7414","authenticated-orcid":false,"given":"Yingchun","family":"Su","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7174-9989","authenticated-orcid":false,"given":"Guidong","family":"Yao","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Senlin","family":"Shi","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuang","family":"Wen","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Song","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhaoting","family":"Wu","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Chen","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tingting","family":"Cheng","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beijia","family":"Kang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Sun","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xianju","family":"Huang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhimin","family":"Sun","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luyao","family":"Cheng","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuling","family":"Liang","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3783-6509","authenticated-orcid":false,"given":"Yingpu","family":"Sun","sequence":"additional","affiliation":[{"name":"Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University , Zhengzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2023,10,16]]},"reference":[{"key":"2023120405583657300_dead210-B1","doi-asserted-by":"crossref","first-page":"399","DOI":"10.1080\/00273171.2011.568786","article-title":"An introduction to propensity score methods for reducing the effects of confounding in observational studies","volume":"46","author":"Austin","year":"2011","journal-title":"Multivariate Behav Res"},{"key":"2023120405583657300_dead210-B2","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1002\/uog.21969","article-title":"Uterine artery Doppler in singleton pregnancies conceived after in-vitro fertilization or intracytoplasmic sperm injection with fresh vs frozen blastocyst transfer: longitudinal cohort study","volume":"56","author":"Cavoretto","year":"2020","journal-title":"Ultrasound Obstet Gynecol"},{"key":"2023120405583657300_dead210-B3","doi-asserted-by":"crossref","first-page":"2428","DOI":"10.1093\/humrep\/deaa235","article-title":"Prospective longitudinal cohort study of uterine arteries Doppler in singleton pregnancies obtained by IVF\/ICSI with oocyte donation or natural conception","volume":"35","author":"Cavoretto","year":"2020","journal-title":"Hum Reprod"},{"key":"2023120405583657300_dead210-B4","doi-asserted-by":"crossref","first-page":"2921","DOI":"10.1093\/humrep\/deab198","article-title":"International Committee for Monitoring Assisted Reproductive Technologies world report: assisted reproductive technology, 2014","volume":"36","author":"Chambers","year":"2021","journal-title":"Hum Reprod"},{"key":"2023120405583657300_dead210-B5","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1016\/S1028-4559(09)60030-9","article-title":"Slow freezing or vitrification of oocytes: their effects on survival and meiotic spindles, and the time schedule for clinical practice","volume":"48","author":"Chen","year":"2009","journal-title":"Taiwan J Obstet Gynecol"},{"key":"2023120405583657300_dead210-B6","doi-asserted-by":"crossref","first-page":"1138","DOI":"10.1016\/j.fertnstert.2012.07.1107","article-title":"Outcomes of vitrified early cleavage-stage and blastocyst-stage embryos in a cryopreservation program: evaluation of 3,150 warming cycles","volume":"98","author":"Cobo","year":"2012","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B7","doi-asserted-by":"crossref","first-page":"767","DOI":"10.1016\/S0015-0282(99)00638-X","article-title":"Embryo cryopreservation at the pronuclear stage and efficient embryo use optimizes the chance for a liveborn infant from a single oocyte retrieval","volume":"73","author":"Damario","year":"2000","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B9","doi-asserted-by":"crossref","first-page":"732","DOI":"10.1016\/j.fertnstert.2006.01.035","article-title":"Steps taken to protect and rescue cryopreserved embryos during Hurricane Katrina","volume":"86","author":"Dickey","year":"2006","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B10","doi-asserted-by":"crossref","first-page":"1492","DOI":"10.1016\/j.fertnstert.2004.09.002","article-title":"The optimal time for intracytoplasmic sperm injection in the human is from 37 to 41 hours after administration of human chorionic gonadotropin","volume":"82","author":"Dozortsev","year":"2004","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B11","doi-asserted-by":"crossref","first-page":"2091","DOI":"10.1093\/humrep\/deab070","article-title":"The influence of frozen-thawed and fresh embryo transfer on utero-placental (vascular) development: the Rotterdam Periconception cohort","volume":"36","author":"Duijn","year":"2021","journal-title":"Hum Reprod"},{"key":"2023120405583657300_dead210-B12","doi-asserted-by":"crossref","first-page":"455","DOI":"10.1016\/j.rbmo.2018.01.006","article-title":"A demographic projection of the contribution of assisted reproductive technologies to world population growth","volume":"36","author":"Faddy","year":"2018","journal-title":"Reprod Biomed Online"},{"key":"2023120405583657300_dead210-B13","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1093\/molehr\/gat073","article-title":"Morphological and cytogenetic assessment of cleavage and blastocyst stage embryos","volume":"20","author":"Fragouli","year":"2014","journal-title":"Mol Hum Reprod"},{"key":"2023120405583657300_dead210-B14","doi-asserted-by":"crossref","first-page":"1155","DOI":"10.1016\/S0015-0282(00)00518-5","article-title":"Blastocyst score affects implantation and pregnancy outcome: towards a single blastocyst transfer","volume":"73","author":"Gardner","year":"2000","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B15","doi-asserted-by":"crossref","first-page":"S182","DOI":"10.1016\/j.fertnstert.2013.07.1430","article-title":"No embryos left behind: emergent vitrification of 90 embryos during hurricane sandy (HS)","volume":"100","author":"Goldman","year":"2013","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B16","doi-asserted-by":"crossref","first-page":"230","DOI":"10.1016\/j.fertnstert.2022.06.006","article-title":"Disaster preparedness in assisted reproductive technology","volume":"118","author":"Goldman","year":"2022","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B17","doi-asserted-by":"crossref","first-page":"594","DOI":"10.1023\/A:1020329326790","article-title":"Low blastocyst formation rates in day-2 fertilized oocytes","volume":"15","author":"Gullett","year":"1998","journal-title":"J Assist Reprod Genet"},{"key":"2023120405583657300_dead210-B18","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1016\/j.rbmo.2011.03.020","article-title":"Retrospective analysis of outcomes following transfer of previously cryopreserved oocytes, pronuclear zygotes and supernumerary blastocysts","volume":"23","author":"Hodes-Wertz","year":"2011","journal-title":"Reprod Biomed Online"},{"key":"2023120405583657300_dead210-B19","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/S1472-6483(10)61754-3","article-title":"Modified vitrification of human pronuclear oocytes: efficacy and effect on ultrastructure","volume":"7","author":"Isachenko","year":"2003","journal-title":"Reprod Biomed Online"},{"key":"2023120405583657300_dead210-B20","doi-asserted-by":"crossref","first-page":"2568","DOI":"10.1016\/j.fertnstert.2011.05.068","article-title":"Damages at Japanese assisted reproductive technology clinics by the Great Eastern Japan Earthquake of 2011","volume":"95","author":"Ishihara","year":"2011","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B21","doi-asserted-by":"crossref","first-page":"682","DOI":"10.1016\/S1472-6483(10)61649-5","article-title":"Impact of oocyte pre-incubation time on fertilization, embryo quality and pregnancy rate after intracytoplasmic sperm injection","volume":"8","author":"Isiklar","year":"2004","journal-title":"Reprod Biomed Online"},{"key":"2023120405583657300_dead210-B22","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/S0015-0282(03)00551-X","article-title":"High survival rate of vitrified human oocytes results in clinical pregnancy","volume":"80","author":"Katayama","year":"2003","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B23","first-page":"CD001894","article-title":"Assisted hatching on assisted conception (in vitro fertilisation (IVF) and intracytoplasmic sperm injection (ICSI))","volume":"3","author":"Lacey","year":"2021","journal-title":"Cochrane Database Syst Rev"},{"key":"2023120405583657300_dead210-B24","first-page":"482","article-title":"Influence of female age on the fresh cycle live birth rate of different controlled ovarian hyperstimulation protocols in poor ovarian response patients","volume":"56","author":"Li","year":"2021","journal-title":"Chin J Obstet Gynecol"},{"key":"2023120405583657300_dead210-B25","doi-asserted-by":"crossref","first-page":"683","DOI":"10.1016\/j.fertnstert.2013.11.034","article-title":"Factors associated with monozygosity in assisted reproductive technology pregnancies and the risk of recurrence using linked cycles","volume":"101","author":"Luke","year":"2014","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B26","first-page":"147","article-title":"Main risk factors for ectopic pregnancy: a case-control study in a sample of Iranian women","volume":"8","author":"Parashi","year":"2014","journal-title":"Int J Fertil Steril"},{"key":"2023120405583657300_dead210-B27","doi-asserted-by":"crossref","first-page":"e11","DOI":"10.1016\/j.fertnstert.2016.01.004","article-title":"Recommendations for development of an emergency plan for in vitro fertilization programs: A committee opinion","volume":"105","author":"Practice Committees of the American Society for Reproductive Medicine, the Society for Assisted Reproductive Technology, and the Society of Reproductive Biologists and Technologists","year":"2016","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B8","doi-asserted-by":"crossref","first-page":"870","DOI":"10.1016\/j.fertnstert.2021.01.009","article-title":"Development of an emergency plan for in vitro fertilization programs: a committee opinion","volume":"115","author":"Practice Committees of the American Society for Reproductive Medicine, the Society for Assisted Reproductive Technology, and the Society of Reproductive Biologists and Technologists","year":"2021","journal-title":"Fertil Steril"},{"key":"2023120405583657300_dead210-B28","first-page":"139","article-title":"Oocyte, embryo and blastocyst cryopreservation in art: systematic review and meta-analysis comparing slow-freezing versus vitrification to produce evidence for the development of global guidance","volume":"23","author":"Rienzi","year":"2017","journal-title":"Hum Reprod Update"},{"key":"2023120405583657300_dead210-B29","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1093\/humrep\/dep346","article-title":"Embryo development of fresh \u201cversus\u201d vitrified metaphase II oocytes after ICSI: a prospective randomized sibling-oocyte study","volume":"25","author":"Rienzi","year":"2010","journal-title":"Hum Reprod"},{"key":"2023120405583657300_dead210-B30","first-page":"393","article-title":"Trends in ectopic pregnancy rates following assisted reproductive technologies in the UK: a 12-year nationwide analysis including 160 000 pregnancies","volume":"31","author":"Santos-Ribeiro","year":"2016","journal-title":"Hum Reprod"},{"key":"2023120405583657300_dead210-B31","doi-asserted-by":"crossref","first-page":"1003","DOI":"10.1093\/humrep\/13.4.1003","article-title":"The successful use of pronuclear embryo transfers the day following oocyte retrieval","volume":"13","author":"Scott","year":"1998","journal-title":"Hum Reprod"},{"key":"2023120405583657300_dead210-B32","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1016\/j.rbmo.2010.04.033","article-title":"Pregnancy and live birth following the transfer of vitrified-warmed blastocysts derived from zona- and corona-cell-free oocytes","volume":"21","author":"Shu","year":"2010","journal-title":"Reprod Biomed Online"},{"key":"2023120405583657300_dead210-B33","doi-asserted-by":"crossref","first-page":"2053","DOI":"10.1159\/000445564","article-title":"Effects of vitrification on outcomes of in vivo-mature, in vitro-mature and immature human oocytes","volume":"38","author":"Song","year":"2016","journal-title":"Cell Physiol Biochem"},{"key":"2023120405583657300_dead210-B34","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1214\/09-STS313","article-title":"Matching methods for causal inference: a review and a look forward","volume":"25","author":"Stuart","year":"2010","journal-title":"Stat Sci"},{"key":"2023120405583657300_dead210-B35","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1016\/j.tjog.2022.03.015","article-title":"Is there an optimal timing interval between hCG trigger and oocyte vitrification?","volume":"61","author":"Weng","year":"2022","journal-title":"Taiwan J Obstet Gynecol"},{"key":"2023120405583657300_dead210-B36","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1097\/AOG.0000000000004825","article-title":"Analysis of the literature and patient counseling considerations for planned oocyte cryopreservation","volume":"140","author":"Wilhoite","year":"2022","journal-title":"Obstet Gynecol"},{"key":"2023120405583657300_dead210-B37","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1007\/s11684-017-0535-6","article-title":"Propensity score-matched study and meta-analysis of cumulative outcomes of day 2\/3 versus day 5\/6 embryo transfers","volume":"11","author":"Yin","year":"2017","journal-title":"Front Med"}],"container-title":["Human Reproduction"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/humrep\/article-pdf\/38\/12\/2412\/53940804\/dead210.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/humrep\/article-pdf\/38\/12\/2412\/53940804\/dead210.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,4]],"date-time":"2023-12-04T05:59:13Z","timestamp":1701669553000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/humrep\/article\/38\/12\/2412\/7319401"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,10,16]]},"references-count":37,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2023,10,16]]},"published-print":{"date-parts":[[2023,12,4]]}},"URL":"https:\/\/doi.org\/10.1093\/humrep\/dead210","relation":{},"ISSN":["0268-1161","1460-2350"],"issn-type":[{"value":"0268-1161","type":"print"},{"value":"1460-2350","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2023,12,1]]},"published":{"date-parts":[[2023,10,16]]}}}