1 Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Inova Fairfax Hospital, Falls Church, Virginia, 22042. Electronic address: Antonio.Saad@inova.org.
2 Department of Clinical Cardiac Electrophysiology, Cardiovascular Disease, Internal Medicine, Inova Fairfax Hospital, Falls Church, Virginia, 22042.
3 Department of Internal Medicine, Inova Fairfax Hospital, Falls Church, Virginia, 22042.
4 Department of Cardiology, Inova Schar Heart and Vascular Institute, Falls Church, Virginia, 22042.
5 Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Inova Fairfax Hospital, Falls Church, Virginia, 22042.
6 Department of Obstetrics and Gynecology, Inova Fairfax Hospital, Falls Church, Virginia, 22042.
7 Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston.
8 Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, Eastern Virginia Medical School, Norfolk, VA.