1. From the Department of Medicine, Division of Cardiovascular Diseases and the Department of Obstetrics and Gynecology, University of Southern California, Keck School of Medicine, Los Angeles (U.E., S.J., M.N.B., N.K., A.M.); Department of Cardiac Sciences, Foothills Medical Centre University of Calgary, Calgary, AB, Canada (A.J.K.); and Department of Cardiology, Tel Aviv Sourasky Medical Center, Tel Aviv University, Sackler School of Medicine, Tel Aviv, Israel (A.R.).