1. Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine; Baylor College of Medicine, Texas Children's Hospital; Houston TX USA
2. Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine; Baylor College of Medicine; Houston TX USA
3. Department of Obstetrics and Gynecology; Baylor College of Medicine; Houston TX USA