International standards for early fetal size and pregnancy dating based on ultrasound measurement of crown–rump length in the first trimester of pregnancy
Aris T. Papageorghiou(John Radcliffe Hospital), José Villar(John Radcliffe Hospital), Stephen Kennedy(University of Oxford), Zulfiqar A Bhutta(Center for Global Development), Douglas G. Altman(Unknown), Manorama Purwar(Indira Gandhi Government Medical College & Hospital), César G. Victora(Universidade Federal de Pelotas), Enrico Bertino(University of Turin), Mário Henrique Burlacchini de Carvalho(Aga Khan University Nairobi), Ann Lambert(University of Oxford), Eric O. Ohuma(London School of Hygiene & Tropical Medicine), Leila Cheikh Ismail(University of Oxford), J. Alison Noble(University of Oxford), Laurent Salomon(Hôpital Necker-Enfants Malades), Michael G. Gravett(University of Washington), Fernando C. Barros(Universidade Católica de Pelotas), Yasmin A. Jaffer(Ministry of Health), Ran Pang(Peking University)
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