1 Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology & Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL, USA.
2 Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mayo Clinic College of Medicine, Rochester, MN, USA.
3 Department of Women's Health, Dell Medical School - UT Austin, Austin, TX, USA.