{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T12:49:33Z","timestamp":1789649373885,"version":"4.0.0"},"reference-count":26,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[2012,2,1]],"date-time":"2012-02-01T00:00:00Z","timestamp":1328054400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2012,2,1]],"date-time":"2012-02-01T00:00:00Z","timestamp":1328054400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","ejog.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["European Journal of Obstetrics & Gynecology and Reproductive Biology"],"published-print":{"date-parts":[[2012,2]]},"DOI":"10.1016\/j.ejogrb.2011.11.019","type":"journal-article","created":{"date-parts":[[2011,12,15]],"date-time":"2011-12-15T09:24:02Z","timestamp":1323941042000},"page":"151-155","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":20,"title":["First trimester ultrasound estimation of gestational age in pregnancies conceived after in vitro fertilization"],"prefix":"10.1016","volume":"160","author":[{"given":"Frank Shao-Ying","family":"Wu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuh-Ming","family":"Hwu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert Kuo-Kuang","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheng-Hsiang","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang-Ju","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming-Huei","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shyr-Yue","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ejogrb.2011.11.019_bib0005","doi-asserted-by":"crossref","first-page":"278","DOI":"10.1016\/S0002-9378(96)70408-8","article-title":"Estimating the date of confinement: ultrasonographic biometry versus certain menstrual dates","volume":"174","author":"Mongelli","year":"1996","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0010","doi-asserted-by":"crossref","first-page":"178","DOI":"10.1046\/j.1469-0705.1996.08030178.x","article-title":"A comparison between ultrasound and a reliable last menstrual period as predictors of the day of delivery in 15,000 examinations","volume":"8","author":"Tunon","year":"1996","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0015","first-page":"336","article-title":"A comparison of the ability of a sonographically measured biparietal diameter and the last menstrual period to predict the spontaneous onset of labor","volume":"76","author":"Waldenstrom","year":"1990","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0020","doi-asserted-by":"crossref","first-page":"975","DOI":"10.1016\/j.ajog.2004.06.053","article-title":"First- and second-trimester ultrasound assessment of gestational age","volume":"191","author":"Kalish","year":"2004","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0025","doi-asserted-by":"crossref","first-page":"346","DOI":"10.1046\/j.1469-0705.1998.12050346.x","article-title":"The growth of the human embryo. A longitudinal biometric assessment from 7 to 12 weeks of gestation","volume":"12","author":"Blaas","year":"1998","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0030","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1097\/00006254-200103000-00023","article-title":"Fetal biometry: clinical, pathological, and technical considerations","volume":"56","author":"Degani","year":"2001","journal-title":"Obstet Gynecol Surv"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0035","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1002\/pd.1972","article-title":"Intra- and interobserver reproducibility study of early fetal growth parameters","volume":"28","author":"Verburg","year":"2008","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0040","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1046\/j.1469-0705.2000.00004.x","article-title":"Gestational age in pregnancies conceived after in vitro fertilization: a comparison between age assessed from oocyte retrieval, crown-rump length and biparietal diameter","volume":"15","author":"Tunon","year":"2000","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0045","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1002\/jcu.1870090206","article-title":"Estimation of gestational age during the first trimester by real-time measurement of fetal crown-rump length and biparietal diameter","volume":"9","author":"Bovicelli","year":"1981","journal-title":"J Clin Ultrasound"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0050","doi-asserted-by":"crossref","first-page":"702","DOI":"10.1111\/j.1471-0528.1975.tb00710.x","article-title":"A critical evaluation of sonar \u201ccrown-rump length\u201d measurements","volume":"82","author":"Robinson","year":"1975","journal-title":"Br J Obstet Gynaecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0055","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1016\/S0140-6736(86)90837-8","article-title":"Statistical methods for assessing agreement between two methods of clinical measurement","volume":"1","author":"Bland","year":"1986","journal-title":"Lancet"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0060","doi-asserted-by":"crossref","first-page":"420","DOI":"10.1037\/0033-2909.86.2.420","article-title":"Intraclass correlations: uses in assessing rater reliability","volume":"86","author":"Shrout","year":"1979","journal-title":"Psychol Bull"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0065","doi-asserted-by":"crossref","first-page":"233","DOI":"10.3109\/00016348209156563","article-title":"Gestational age and ultrasonic measurement of gestational sac, crown-rump length and biparietal diameter during first 15 weeks of pregnancy","volume":"61","author":"Selbing","year":"1982","journal-title":"Acta Obstet Gynecol Scand"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0070","doi-asserted-by":"crossref","first-page":"593","DOI":"10.3109\/00016348509156368","article-title":"Conceptual dating by ultrasonic measurement of the fetal biparietal diameter in early pregnancy","volume":"64","author":"Selbing","year":"1985","journal-title":"Acta Obstet Gynecol Scand"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0075","doi-asserted-by":"crossref","first-page":"504","DOI":"10.1002\/uog.1993","article-title":"Ultrasound dating at 12\u201314 weeks of gestation. A prospective cross-validation of established dating formulae in in-vitro fertilized pregnancies","volume":"26","author":"Sladkevicius","year":"2005","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0080","series-title":"Ultrasound in obstetrics and gynecology","first-page":"146","article-title":"Sonographic determination of menstrual age","author":"Filly","year":"2000"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0085","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1016\/0002-9378(91)90274-U","article-title":"Embryonic ultrasonographic measurements: crown-rump length revisited","volume":"165","author":"Goldstein","year":"1991","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0090","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1016\/j.rbmo.2010.12.003","article-title":"Assisted reproduction for the validation of gestational age assessment methods","volume":"22","author":"Beydoun","year":"2011","journal-title":"Reprod Biomed Online"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0095","doi-asserted-by":"crossref","first-page":"377","DOI":"10.1001\/jama.1968.03140060001001","article-title":"The length and variability of the human menstrual cycle","volume":"203","author":"Chiazze","year":"1968","journal-title":"JAMA"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0100","first-page":"613","article-title":"Routine ultrasound screening for the prediction of gestational age","volume":"65","author":"Campbell","year":"1985","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0105","doi-asserted-by":"crossref","first-page":"659","DOI":"10.1111\/j.1471-0528.1988.tb06526.x","article-title":"Occult biochemical pregnancy: fact or fiction?","volume":"95","author":"Walker","year":"1988","journal-title":"Br J Obstet Gynaecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0110","doi-asserted-by":"crossref","first-page":"737","DOI":"10.1111\/j.1471-0528.1997.tb11988.x","article-title":"Comparison of second trimester biometry in singleton and twin pregnancies conceived with assisted reproductive techniques","volume":"104","author":"Gardosi","year":"1997","journal-title":"Br J Obstet Gynaecol"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0115","doi-asserted-by":"crossref","first-page":"979","DOI":"10.1111\/j.1471-0528.2010.02592.x","article-title":"First-trimester ultrasound dating of twin pregnancy: are singleton charts reliable?","volume":"117","author":"Dias","year":"2010","journal-title":"BJOG"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0120","doi-asserted-by":"crossref","first-page":"445","DOI":"10.7863\/jum.1991.10.8.445","article-title":"A prospective longitudinal study of growth in twin gestations compared with growth in singleton pregnancies. II. The fetal limbs","volume":"10","author":"Reece","year":"1991","journal-title":"J Ultrasound Med"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0125","doi-asserted-by":"crossref","first-page":"439","DOI":"10.7863\/jum.1991.10.8.439","article-title":"A prospective longitudinal study of growth in twin gestations compared with growth in singleton pregnancies. I. The fetal head","volume":"10","author":"Reece","year":"1991","journal-title":"J Ultrasound Med"},{"key":"10.1016\/j.ejogrb.2011.11.019_bib0130","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1016\/j.ijgo.2005.04.005","article-title":"Sonographic dating of twin pregnancy using singleton data","volume":"90","author":"Tabari","year":"2005","journal-title":"Int J Gynaecol Obstet"}],"container-title":["European Journal of Obstetrics & Gynecology and Reproductive Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211511006415?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211511006415?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T05:25:18Z","timestamp":1759555518000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0301211511006415"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,2]]},"references-count":26,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2012,2]]}},"alternative-id":["S0301211511006415"],"URL":"https:\/\/doi.org\/10.1016\/j.ejogrb.2011.11.019","relation":{},"ISSN":["0301-2115"],"issn-type":[{"value":"0301-2115","type":"print"}],"subject":[],"published":{"date-parts":[[2012,2]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"First trimester ultrasound estimation of gestational age in pregnancies conceived after in vitro fertilization","name":"articletitle","label":"Article Title"},{"value":"European Journal of Obstetrics & Gynecology and Reproductive Biology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ejogrb.2011.11.019","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2011 Elsevier Ireland Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}