{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T00:36:05Z","timestamp":1791246965339,"version":"4.1.0"},"reference-count":67,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2003,4,1]],"date-time":"2003-04-01T00:00:00Z","timestamp":1049155200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2003,4,1]],"date-time":"2003-04-01T00:00:00Z","timestamp":1049155200000},"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","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Placenta"],"published-print":{"date-parts":[[2003,4]]},"DOI":"10.1053\/plac.2002.0932","type":"journal-article","created":{"date-parts":[[2003,6,30]],"date-time":"2003-06-30T15:47:00Z","timestamp":1056988020000},"page":"S86-S93","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":187,"special_numbering":"SA","title":["The Human First Trimester Gestational Sac Limits Rather than Facilitates Oxygen Transfer to the Foetus\u2014A Review"],"prefix":"10.1016","volume":"24","author":[{"given":"E.","family":"Jauniaux","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B.","family":"Gulbis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G.J.","family":"Burton","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1053\/plac.2002.0932_RF1","doi-asserted-by":"crossref","first-page":"635","DOI":"10.1016\/S0143-4004(96)80082-8","article-title":"Sources of amino acids for protein synthesis during early organogenesis in the rat. 4. Mechanisms before envelopment of the embryo by the yolk sac","volume":"17","author":"Beckman","year":"1996","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF2","series-title":"Maternal, Fetal and Neonatal Physiology: A Clinical Perspective","author":"Blackburn","year":"1992"},{"key":"10.1053\/plac.2002.0932_RF3","series-title":"The Human Placenta","author":"Boyd","year":"1970"},{"key":"10.1053\/plac.2002.0932_RF4","first-page":"297","article-title":"Ontogeny and distribution of Fcg receptors in the human placenta. Transport or immune surveillance","volume":"184","author":"Bright","year":"1994","journal-title":"J Anat"},{"key":"10.1053\/plac.2002.0932_RF5","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1016\/0002-9378(67)90149-4","article-title":"Arterial blood flow in the human intervillous space","volume":"98","author":"Burchell","year":"1969","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF6","doi-asserted-by":"crossref","first-page":"718","DOI":"10.1016\/S0002-9378(99)70518-1","article-title":"Maternal arterial connections to the placental intervillous space during the first trimester of human pregnancy; the Boyd Collection revisited","volume":"181","author":"Burton","year":"1999","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF7","series-title":"Vascular Morphogenesis in the Female Reproductive System","first-page":"285","article-title":"Placental functional morphology","author":"Burton","year":"2001"},{"key":"10.1053\/plac.2002.0932_RF8","doi-asserted-by":"crossref","first-page":"2954","DOI":"10.1210\/jcem.87.6.8563","article-title":"Uterine glands provide histiotrophic nutrition for the human fetus during the first trimester of pregnancy","volume":"87","author":"Burton","year":"2002","journal-title":"J Clin Endocrinol Metab"},{"key":"10.1053\/plac.2002.0932_RF9","doi-asserted-by":"crossref","DOI":"10.1016\/S1472-6483(10)62060-3","article-title":"Oxygen, early embryonic metabolism and free radical-mediated embryopathies","author":"Burton","year":"2003","journal-title":"Reprod BioMed Online"},{"key":"10.1053\/plac.2002.0932_RF10","doi-asserted-by":"crossref","first-page":"1768","DOI":"10.1210\/jcem.87.4.8434","article-title":"Fetal tissues are exposed to biologically relevant free thryroxine concentrations during early phases of development","volume":"87","author":"Calvo","year":"2002","journal-title":"J Clin Endocrinol Metab"},{"key":"10.1053\/plac.2002.0932_RF11","doi-asserted-by":"crossref","first-page":"F49","DOI":"10.1136\/fn.71.1.F49","article-title":"Concentrations of vitamins A and E in amniotic fluid, extraembryonic coelomic fluid, and maternal serum in the first trimester of pregnancy","volume":"71","author":"Campbell","year":"1994","journal-title":"Arch Dis Child"},{"key":"10.1053\/plac.2002.0932_RF12","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1016\/S0143-4004(82)80004-0","article-title":"A three-dimensional study of the normal human placental villous core: II. Stromal architecture","volume":"3","author":"Castellucci","year":"1982","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF13","doi-asserted-by":"crossref","first-page":"190","DOI":"10.1159\/000146886","article-title":"Fetal vasculogenesis and angiogenesis in human placental villi","volume":"136","author":"Demir","year":"1989","journal-title":"Acta Ana"},{"key":"10.1053\/plac.2002.0932_RF14","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1002\/aja.1001340207","article-title":"The development of capillaries in the villi of early human placentas","volume":"134","author":"Dempsey","year":"1972","journal-title":"Am J Anat"},{"key":"10.1053\/plac.2002.0932_RF15","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1152\/physrev.00018.2001","article-title":"Free radicals in the physiological control of cell function","volume":"82","author":"Droge","year":"2002","journal-title":"Physiol Rev"},{"key":"10.1053\/plac.2002.0932_RF16","doi-asserted-by":"crossref","first-page":"715","DOI":"10.1038\/10420","article-title":"Oxidative DNA damage and embryo development","volume":"5","author":"Eriksson","year":"1999","journal-title":"Nature Med"},{"key":"10.1053\/plac.2002.0932_RF17","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/0028-2243(92)90241-P","article-title":"Oxygen tension in follicular fluid falls with oocyte maturation","volume":"43","author":"Fischer","year":"1992","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1053\/plac.2002.0932_RF18","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1016\/0002-9378(91)90653-9","article-title":"Diastolic circulatory dynamics in the presence of elevated placental resistance and retrograde diastolic flow in the umbilical artery: A Doppler echographic study in lambs","volume":"164","author":"Fouron","year":"1991","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF19","doi-asserted-by":"crossref","first-page":"1669","DOI":"10.1126\/science.277.5332.1669","article-title":"Regulation of human placental development by oxygen tension","volume":"277","author":"Genbacev","year":"1997","journal-title":"Science"},{"key":"10.1053\/plac.2002.0932_RF20","doi-asserted-by":"crossref","first-page":"995","DOI":"10.1038\/228995a0","article-title":"Synthesis of serum albumin, prealbumin, alphafetoprotein, alpha1-antitrypsin and transferrin by the human yolk sac","volume":"228","author":"Gitlin","year":"1970","journal-title":"Nature"},{"key":"10.1053\/plac.2002.0932_RF21","doi-asserted-by":"crossref","first-page":"675","DOI":"10.1016\/S0046-8177(76)80079-2","article-title":"The human yolk sac and yolk sac carcinoma. An ultrastructural study","volume":"7","author":"Gonzalez-Crussi","year":"1976","journal-title":"Hum Pathol"},{"key":"10.1053\/plac.2002.0932_RF22","doi-asserted-by":"crossref","first-page":"65","DOI":"10.1093\/oxfordjournals.humrep.a136362","article-title":"Oxygen concentration gradient across the ovarian follicular epithelium: model, predictions and implications","volume":"1","author":"Gosden","year":"1986","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF23","doi-asserted-by":"crossref","first-page":"886","DOI":"10.1093\/oxfordjournals.humrep.a137755","article-title":"Determination of protein pattern in embryonic cavities of early human pregnancies: A model to understand materno-embryonic exchanges","volume":"7","author":"Gulbis","year":"1992","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF24","first-page":"289","article-title":"Distribution of iron and iron-binding proteins in first trimester human pregnancies","volume":"84","author":"Gulbis","year":"1994","journal-title":"Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF25","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1203\/00006450-199604000-00027","article-title":"Biochemical investigation of kidney functional maturation in early human pregnancy","volume":"39","author":"Gulbis","year":"1996","journal-title":"Pediatr Res"},{"key":"10.1053\/plac.2002.0932_RF26","doi-asserted-by":"crossref","first-page":"857","DOI":"10.1093\/molehr\/4.9.857","article-title":"Protein and enzyme patterns in the fluid cavities of the first trimester gestational sac: relevance to the absorptive role of secondary yolk sac","volume":"9","author":"Gulbis","year":"1998","journal-title":"Molec Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF27","series-title":"Free Radicals in Biology and Medicine","author":"Halliwell","year":"1999"},{"key":"10.1053\/plac.2002.0932_RF28","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1016\/S0002-9378(87)80371-X","article-title":"Echographic and anatomic studies of the maternotrophoblastic border during the first trimester of pregnancy","volume":"157","author":"Hustin","year":"1987","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF29","doi-asserted-by":"crossref","first-page":"695","DOI":"10.1016\/S0002-9378(97)70572-6","article-title":"Maternal circulation in the first trimester human placenta: Myth or reality","volume":"176","author":"Jaffe","year":"1997","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF30","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1046\/j.1469-0705.1991.01060435.x","article-title":"In vivo investigations of anatomy and physiology of early human placental circulations","volume":"1","author":"Jauniaux","year":"1991","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF31","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1016\/0143-4004(91)90008-4","article-title":"Development of the early human placenta: A morphometric study","volume":"12","author":"Jauniaux","year":"1991","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF32","doi-asserted-by":"crossref","first-page":"1160","DOI":"10.1093\/oxfordjournals.humrep.a137503","article-title":"Development of the secondary human yolk sac: Correlation of sonographic and anatomic features","volume":"6","author":"Jauniaux","year":"1991","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF33","first-page":"1124","article-title":"Biochemical composition of coelomic fluid in early human pregnancy","volume":"78","author":"Jauniaux","year":"1991","journal-title":"Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF34","series-title":"The First Twelve Weeks of Gestation","first-page":"45","article-title":"Early human placental morphology","author":"Jauniaux","year":"1992"},{"key":"10.1053\/plac.2002.0932_RF35","series-title":"The First Twelve Weeks of Gestation","first-page":"192","article-title":"Morphology and significance of the human yolk sac","author":"Jauniaux","year":"1992"},{"key":"10.1053\/plac.2002.0932_RF36","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1016\/0002-9378(92)91678-4","article-title":"Doppler ultrasound features of the developing placental circulations: Correlation with anatomic findings","volume":"166","author":"Jauniaux","year":"1992","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF37","doi-asserted-by":"crossref","first-page":"782","DOI":"10.1093\/oxfordjournals.humrep.a138141","article-title":"Protein and steroid levels in embryonic cavities in early human pregnancy","volume":"8","author":"Jauniaux","year":"1993","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF38","doi-asserted-by":"crossref","first-page":"1359","DOI":"10.1016\/S0002-9378(13)90465-8","article-title":"Investigation of the acid-base balance of coelomic and amniotic fluids in early human pregnancy","volume":"170","author":"Jauniaux","year":"1994","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF39","doi-asserted-by":"crossref","first-page":"1175","DOI":"10.1093\/oxfordjournals.humrep.a138654","article-title":"Amino acids concentration in human embryological fluids","volume":"9","author":"Jauniaux","year":"1994","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF40","doi-asserted-by":"crossref","first-page":"3297","DOI":"10.1093\/oxfordjournals.humrep.a135906","article-title":"Materno-fetal immunoglobulin transfer and passive immunity during the first trimester of human trimester of human pregnancy","volume":"10","author":"Jauniaux","year":"1995","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF41","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/S0002-9378(97)80007-5","article-title":"Transfer of inulin across the first trimester human placenta","volume":"176","author":"Jauniaux","year":"1997","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF42","series-title":"Embryonic Medicine and Therapy","first-page":"223","article-title":"Embryonal physiology","author":"Jauniaux","year":"1997"},{"key":"10.1053\/plac.2002.0932_RF43","first-page":"257","article-title":"In-vivo study of placental drug transfer during the first trimester of human pregnancy","volume":"12","author":"Jauniaux","year":"1998","journal-title":"Troph Res"},{"key":"10.1053\/plac.2002.0932_RF44","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1016\/S0378-3782(97)00107-2","article-title":"Free amino acid distribution in the first trimester human gestational sac","volume":"51","author":"Jauniaux","year":"1998","journal-title":"Early Hum Dev"},{"key":"10.1053\/plac.2002.0932_RF45","doi-asserted-by":"crossref","first-page":"2901","DOI":"10.1093\/humrep\/14.11.2901","article-title":"In vivo measurement of intrauterine gases and acid-base values in early human pregnancy","volume":"14","author":"Jauniaux","year":"1999","journal-title":"Hum Reprod"},{"key":"10.1053\/plac.2002.0932_RF46","doi-asserted-by":"crossref","first-page":"2111","DOI":"10.1016\/S0002-9440(10)64849-3","article-title":"Onset of maternal arterial bloodflow and placental oxidative stress; a possible factor in human early pregnancy failure","volume":"157","author":"Jauniaux","year":"2000","journal-title":"Am J Pathol"},{"key":"10.1053\/plac.2002.0932_RF47","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1093\/humupd\/6.3.268","article-title":"Fluid compartments of the embryonic environment","volume":"6","author":"Jauniaux","year":"2000","journal-title":"Hum Reprod Update"},{"key":"10.1053\/plac.2002.0932_RF48","doi-asserted-by":"crossref","first-page":"998","DOI":"10.1067\/mob.2001.111935","article-title":"Evaluation of respiratory gases and acid-base gradients in fetal fluids and uteroplacental tissue between 7 and 16 weeks","volume":"184","author":"Jauniaux","year":"2001","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF49","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/S0015-0282(02)04568-5","article-title":"Comparison of ultrasound and Doppler mapping of the intervillous circulation in normal and abnormal early pregnancies","volume":"79","author":"Jauniaux","year":"2003","journal-title":"Fertil Steril"},{"key":"10.1053\/plac.2002.0932_RF50","doi-asserted-by":"crossref","first-page":"115","DOI":"10.1016\/S0002-9440(10)63803-5","article-title":"Trophoblastic oxidative stress in relation to temporal and regional differences in maternal placental blood flow in normal and abnormal early pregnancies","volume":"162","author":"Jauniaux","year":"2003","journal-title":"Am J Pathol"},{"key":"10.1053\/plac.2002.0932_RF51","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1016\/0968-4328(95)00002-L","article-title":"Ultrastructure of the materno-embryonic interface in the first trimester of pregnancy","volume":"2","author":"Jones","year":"1995","journal-title":"Micron"},{"key":"10.1053\/plac.2002.0932_RF52","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1002\/ar.1092050205","article-title":"A fine structural and cytochemical study of the rhesus monkey yolk sac: endoderm and mesothelium","volume":"205","author":"King","year":"1983","journal-title":"Anat Rec"},{"key":"10.1053\/plac.2002.0932_RF53","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/S0143-4004(86)80003-0","article-title":"Microscopical morphology of the human placenta and its effects on oxygen diffusion: a morphometric study","volume":"7","author":"Mayhew","year":"1986","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF54","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1111\/j.1469-185X.1978.tb00993.x","article-title":"Whole-embryo culture and the study of mammalian embryos during organogenesis","volume":"53","author":"New","year":"1978","journal-title":"Biol Rev"},{"key":"10.1053\/plac.2002.0932_RF55","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/S0143-4004(80)80012-9","article-title":"Trophoblastic invasion of human decidua from 8 to 18 weeks of pregnancy","volume":"1","author":"Pijnenborg","year":"1980","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF56","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1016\/S0143-4004(83)80043-5","article-title":"Uteroplacental arterial changes related to interstitial trophoblast migration in early human pregnancy","volume":"4","author":"Pijnenborg","year":"1983","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF57","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1023\/A:1026511420505","article-title":"Ontogenic profile of some antioxidants and lipid peroxidation in human placental and fetal tissues","volume":"215","author":"Qanungo","year":"2000","journal-title":"Mol Cell Biochem"},{"key":"10.1053\/plac.2002.0932_RF58","series-title":"Placental Vasculature and Circulation","author":"Ramsey","year":"1980"},{"key":"10.1053\/plac.2002.0932_RF59","doi-asserted-by":"crossref","first-page":"425","DOI":"10.1016\/0002-9378(66)90667-3","article-title":"Formation of fetal cotyledons in the hemochorial placenta. A theoretical consideration of the functional implications of such an arrangement","volume":"94","author":"Reynolds","year":"1966","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF60","first-page":"283","article-title":"Oxygen measurements in endometrial and trophoblastic tissues during early pregnancy","volume":"80","author":"Rodesch","year":"1992","journal-title":"Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF61","first-page":"176","article-title":"A novel perspective on the role of human chorionic gonadotropin during pregnancy and in gestational trophoblastic disease","volume":"1","author":"Rodway","year":"1995","journal-title":"Early Preg"},{"key":"10.1053\/plac.2002.0932_RF62","doi-asserted-by":"crossref","first-page":"368","DOI":"10.1016\/0002-9378(79)90707-5","article-title":"Changes of lipid peroxidation and superoxide dismutase activity in the human placenta","volume":"135","author":"Sekiba","year":"1979","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF63","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1016\/S0143-4004(05)80216-4","article-title":"Plasma protein synthesis and secretion in the visceral yolk sac of the fetal rat: gene expression, protein synthesis and secretion","volume":"11","author":"Thomas","year":"1990","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF64","doi-asserted-by":"crossref","first-page":"1884","DOI":"10.1016\/0002-9378(95)90446-8","article-title":"The coelomic cavity: A reservoir for metals","volume":"173","author":"Wathen","year":"1995","journal-title":"Am J Obstet Gynecol"},{"key":"10.1053\/plac.2002.0932_RF65","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1016\/S0143-4004(97)80064-1","article-title":"Variations in expression of copper\/zinc superoxide dismutase in villous trophoblast of the human placenta with gestational age","volume":"18","author":"Watson","year":"1997","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF66","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1016\/S0143-4004(98)90095-9","article-title":"Changes in the concentration, localisation and activity of catalase within the human placenta during early gestation","volume":"19","author":"Watson","year":"1998","journal-title":"Placenta"},{"key":"10.1053\/plac.2002.0932_RF67","first-page":"1697","article-title":"Susceptibility of human placental syncytiotrophoblastic mitochondria to oxygen-mediated damage in relation to gestational age","volume":"83","author":"Watson","year":"1998","journal-title":"J Clin Endocrinol Metab"}],"container-title":["Placenta"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S014340040290932X?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S014340040290932X?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T17:29:34Z","timestamp":1758907774000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S014340040290932X"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2003,4]]},"references-count":67,"alternative-id":["S014340040290932X"],"URL":"https:\/\/doi.org\/10.1053\/plac.2002.0932","relation":{},"ISSN":["0143-4004"],"issn-type":[{"value":"0143-4004","type":"print"}],"subject":[],"published":{"date-parts":[[2003,4]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"The Human First Trimester Gestational Sac Limits Rather than Facilitates Oxygen Transfer to the Foetus\u2014A Review","name":"articletitle","label":"Article Title"},{"value":"Placenta","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1053\/plac.2002.0932","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"converted-article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2003  Published by Elsevier Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}