1. Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.W., J.W., S.C., X.L., J.L.).
2. Key Laboratory of Cardiovascular Epidemiology, Chinese Academy of Medical Sciences, Beijing, China (Y.W., J.W., J.L.).
3. Beijing QTANE Education Technology Co, Ltd, China (B.L.).