1. From the Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (RPW, KR, and JH); the Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China (DG, XD, and XW); the Department of Medicine, Tulane University School of Medicine, New Orleans, LA (JH);