1. Division of Maternal-Fetal Medicine; Department of Obstetrics and Gynecology; Cedars-Sinai Medical Center; Los Angeles CA USA
2. Department of Endocrinology; Keck School of Medicine; University Southern California; Los Angeles CA USA
3. Division of Maternal-Fetal Medicine; Department of Obstetrics and Gynecology; Keck School of Medicine; University Southern California; Los Angeles CA USA