Affiliations

• ¹ Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, United States Department of Health and Human Services, Bethesda, MD; Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI. Electronic address: romeror@mail.nih.gov.
• ² Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, United States Department of Health and Human Services, Bethesda, MD; Oxford Maternal and Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, UK.
• ³ Department of Obstetrics and Gynecology, Federal University of Paraíba, João Pessoa, Brazil.
• ⁴ Department of Obstetrics and Gynecology, University of Kentucky, Lexington, KY.
• ⁵ Center for Biomedical Research, Population Council, New York, NY.
• ⁶ Office of Women's Health, Integrative Biosciences Center, Wayne State University, Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI; Department of Physiology, Wayne State University School of Medicine, Detroit, MI.
• ⁷ Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK.