1. Division of Maternal–Fetal Medicine, Department of Obstetrics and Gynecology, Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA;
2. Section of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Ochsner Health System, New Orleans, LO, USA;
3. Section of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Oklahoma College of Medicine, Oklahoma City, OK, USA