{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T09:22:12Z","timestamp":1770888132019,"version":"3.50.1"},"reference-count":26,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2019,12,1]],"date-time":"2019-12-01T00:00:00Z","timestamp":1575158400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2019,12,1]],"date-time":"2019-12-01T00:00:00Z","timestamp":1575158400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","rbmojournal.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Reproductive BioMedicine Online"],"published-print":{"date-parts":[[2019,12]]},"DOI":"10.1016\/j.rbmo.2019.08.002","type":"journal-article","created":{"date-parts":[[2019,8,16]],"date-time":"2019-08-16T11:58:12Z","timestamp":1565956692000},"page":"924-930","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":5,"title":["Effects of oral contraceptive pretreatment on IVF outcomes in women following a GnRH agonist protocol"],"prefix":"10.1016","volume":"39","author":[{"given":"Lan","family":"Xu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lingling","family":"Ding","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jingjing","family":"Jiang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peihao","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daimin","family":"Wei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yingying","family":"Qin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.rbmo.2019.08.002_bib0001","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1016\/j.fertnstert.2004.06.076","article-title":"A randomized prospective trial comparing gonadotrophin-releasing hormone (GnRH) antagonist\/recombinant follicle-stimulating hormone (rFSH) versus GnRH-agonist\/rFSH in women pretreated with oral contraceptives beforein vitro fertilization","volume":"83","author":"Barmat","year":"2005","journal-title":"Fertil. Steril."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0002","doi-asserted-by":"crossref","first-page":"1063","DOI":"10.1016\/S0015-0282(98)00333-1","article-title":"Effects of pretreatment with an oral contraceptive on the time required to achieve pituitary suppression with gonadotrophin-releasing hormone analogues and on subsequent implantation and pregnancy rates","volume":"70","author":"Biljan","year":"1998","journal-title":"Fertil. Steril."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0003","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1093\/humrep\/del340","article-title":"Effects of oral contraceptive, synthetic progestogen or natural oestrogen pre-treatments on the hormonal profile and the antral follicle cohort before GnRH antagonist protocol","volume":"22","author":"Cedrin-Durnerin","year":"2007","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0004","doi-asserted-by":"crossref","first-page":"475","DOI":"10.1016\/0010-7824(79)90053-2","article-title":"Pituitary and ovarian function in women receiving hormonal contraception","volume":"20","author":"Cohen","year":"1979","journal-title":"Contraception"},{"key":"10.1016\/j.rbmo.2019.08.002_bib0005","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1186\/1477-7827-11-54","article-title":"First intention IVF protocol for polycystic ovaries: does oral contraceptive pill pretreatment influence COH outcome?","volume":"11","author":"Decanter","year":"2013","journal-title":"Reprod. Biol. Endocrinol."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0006","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1007\/s10815-008-9203-8","article-title":"Oral contraceptive pretreatment does not improve outcome in microdose gonadotrophin-releasing hormone agonist protocol among poor responder intracytoplasmic sperm injection patients","volume":"25","author":"Duvan","year":"2008","journal-title":"J. Assist. Reprod. Genet."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0007","article-title":"Oral contraceptive pill, progestogen or oestrogen pretreatment for ovarian stimulation protocols for women undergoing assisted reproductive techniques","volume":"5","author":"Farquhar","year":"2017","journal-title":"Cochrane Database Syst Rev"},{"key":"10.1016\/j.rbmo.2019.08.002_bib0008","doi-asserted-by":"crossref","first-page":"590","DOI":"10.1016\/j.fertnstert.2011.06.022","article-title":"Cycle scheduling with oral contraceptive pills in the GnRH antagonist protocol versus the long protocol: a randomized, controlled trial","volume":"96","author":"Garcia-Velasco","year":"2011","journal-title":"Fertil. Steril."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0009","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1016\/j.beem.2006.03.005","article-title":"Endometrium in PCOS: Implantation and predisposition to endocrine CA","volume":"20","author":"Giudice","year":"2006","journal-title":"Best Pract. Res. Clin. Endocrinol. Metab."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0010","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1007\/BF01135678","article-title":"Prediction of implantation by the sonographic appearance of the endometrium during controlled ovarian stimulation forin vitro fertilization (IVF)","volume":"7","author":"Gonen","year":"1990","journal-title":"J. In vitro Fert. Embryo. Transf."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0011","doi-asserted-by":"crossref","first-page":"1055","DOI":"10.1016\/j.fertnstert.2007.07.1354","article-title":"Oral contraceptive pill pretreatment in ovarian stimulation with GnRH antagonists for IVF: a systematic review and meta-analysis","volume":"90","author":"Griesinger","year":"2008","journal-title":"Fertil. Steril."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0012","doi-asserted-by":"crossref","first-page":"96","DOI":"10.1186\/1477-7827-11-96","article-title":"Cycle scheduling forin vitro fertilization with oral contraceptive pills versus oral oestradiol valerate: a randomized, controlled trial","volume":"11","author":"Hauzman","year":"2013","journal-title":"Reprod. Biol. Endocrinol."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0013","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/S0303-7207(01)00469-5","article-title":"Gonadotrophic control of ovarian follicular growth and development","volume":"179","author":"Hillier","year":"2001","journal-title":"Mol. Cell. Endocrinol."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0014","doi-asserted-by":"crossref","first-page":"1408","DOI":"10.1093\/humrep\/del030","article-title":"Cetrorelix in an oral contraceptive-pretreated stimulation cycle compared with buserelin in IVF\/ICSI patients treated with r-hFSH: a randomized, multicentre, phase IIIb study","volume":"21","author":"Huirne","year":"2006","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0015","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1016\/0002-9378(77)90353-2","article-title":"Gonadotrophin, prolactin, and steroid hormone levels after discontinuation of oral contraceptives","volume":"127","author":"Klein","year":"1977","journal-title":"Am. J. Obstet. Gynecol."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0016","first-page":"352","article-title":"Effect of oral contraceptive pill pretreatment on ongoing pregnancy rates in patients stimulated with GnRH antagonists and recombinant FSH for IVF","volume":"21","author":"Kolibianakis","year":"2006","journal-title":"A randomized controlled trial. Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0017","doi-asserted-by":"crossref","first-page":"1525","DOI":"10.1093\/humrep\/deh272","article-title":"Elevated progesterone at initiation of stimulation is associated with a lower ongoing pregnancy rate after IVF using GnRH antagonists","volume":"19","author":"Kolibianakis","year":"2004","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0018","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1016\/j.fertnstert.2016.05.003","article-title":"Criteria, prevalence, and phenotypes of polycystic ovary syndrome","volume":"106","author":"Lizneva","year":"2016","journal-title":"Fertil. Steril."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0019","doi-asserted-by":"crossref","first-page":"1963","DOI":"10.1016\/j.fertnstert.2008.01.007","volume":"91","author":"Meldrum","year":"2009","journal-title":"Fertil. Steril."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0020","doi-asserted-by":"crossref","first-page":"149","DOI":"10.17772\/gp\/1706","article-title":"Endometrial receptivity\u2013 can it be diagnosed and controlled? and why does it matter?","volume":"85","author":"Miko\u0142ajczyk","year":"2014","journal-title":"Ginekol. Pol."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0021","doi-asserted-by":"crossref","first-page":"2515","DOI":"10.1093\/humrep\/12.11.2515","article-title":"Endometrial ultrasonography as a predictor of pregnancy in an in-vitro fertilization programme after ovarian stimulation and gonadotrophin-releasing hormone and gonadotrophins","volume":"12","author":"Oliveira","year":"1997","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0022","doi-asserted-by":"crossref","first-page":"705","DOI":"10.1093\/oxfordjournals.humrep.a136618","article-title":"Embryo scoring as a prognostic tool in IVF treatment","volume":"2","author":"Puissant","year":"1987","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0023","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1093\/humrep\/dei302","article-title":"A comparative randomized trial to assess the impact of oral contraceptive pretreatment on follicular growth and hormone profiles in GnRH antagonist-treated patients","volume":"21","author":"Rombauts","year":"2006","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0024","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1016\/S0010-7824(99)00025-6","article-title":"Activity of the pituitary-ovarian axis in the pill-free interval during use of low-dose combined oral contraceptives","volume":"59","author":"van Heusden","year":"1999","journal-title":"Contraception"},{"key":"10.1016\/j.rbmo.2019.08.002_bib0025","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1093\/humrep\/dew325","article-title":"Effect of pretreatment with oral contraceptives and progestins on IVF outcomes in women with polycystic ovary syndrome","volume":"32","author":"Wei","year":"2017","journal-title":"Hum. Reprod."},{"key":"10.1016\/j.rbmo.2019.08.002_bib0026","doi-asserted-by":"crossref","first-page":"451","DOI":"10.1016\/S0015-0282(16)60917-2","article-title":"Oral contraceptive pills and follicular fluid hormones in anin vitro fertilization program","volume":"52","author":"Weisman","year":"1989","journal-title":"Fertil. Steril."}],"container-title":["Reproductive BioMedicine Online"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1472648319306960?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1472648319306960?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T08:16:28Z","timestamp":1761466588000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1472648319306960"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,12]]},"references-count":26,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2019,12]]}},"alternative-id":["S1472648319306960"],"URL":"https:\/\/doi.org\/10.1016\/j.rbmo.2019.08.002","relation":{},"ISSN":["1472-6483"],"issn-type":[{"value":"1472-6483","type":"print"}],"subject":[],"published":{"date-parts":[[2019,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Effects of oral contraceptive pretreatment on IVF outcomes in women following a GnRH agonist protocol","name":"articletitle","label":"Article Title"},{"value":"Reproductive BioMedicine Online","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.rbmo.2019.08.002","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2019 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}