Affiliation: | a Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, and the Center for Health Care Research and Policy, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH b Burns and Allen Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA c Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD d University of Miami School of Medicine, Miami, FL e Department of Obstetrics and Gynecology, University of Illinois at Chicago School of Medicine, Chicago, IL f Department of Obstetrics and Gynecology, University of Texas Medical School at Houston, Houston, TX g Intermountain HealthCare, Salt Lake City, UT h Department of Obstetrics and Gynecology, Baystate Medical Center, Springfield, MA i Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY j Summa Health System, Akron, OH k Christiana Care Health System, Wilmington, DE l Indiana University-Clarian Health, Indianapolis, IN m MedStar Health, Washington, DC n Emmes Corporation, Rockville, MD |