From the Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (X.Y., J.H., J.C., T.N.K.); State Key Laboratory of Cardiovascular Disease, Department of Epidemiology and Population Genetics, Fuwai Hospital, National Center of Cardiovascular Diseases (X.Y., D.G., J.H., J.C., X.W.) and National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences (D.L.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Medicine, Tulane University School of Medicine, New Orleans, LA (J.H., J.C.); Department of Epidemiology, University of Texas School of Public Health, Houston (J.E.H., L.C.S.); Division of Biostatistics, Washington University School of Medicine, St. Louis, MO (D.C.R., T.K.R.); Institute of Basic Medicine, Shandong Academy of Medical Sciences, Shandong, China (F.L.); Department of Cardiology, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Shaanxi, China (J.M.); and Division of Prevention and Population Sciences, National Heart, Lung, and Blood Institute, Bethesda, MD (C.E.J.). From the Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (X.Y., J.H., J.C., T.N.K.); State Key Laboratory of Cardiovascular Disease, Department of Epidemiology and Population Genetics, Fuwai Hospital, National Center of Cardiovascular Diseases (X.Y., D.G., J.H., J.C., X.W.) and National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences (D.L.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Medicine, Tulane University School of Medicine, New Orleans, LA (J.H., J.C.); Department of Epidemiology, University of Texas School of Public Health, Houston (J.E.H., L.C.S.); Division of Biostatistics, Washington University School of Medicine, St. Louis, MO (D.C.R., T.K.R.); Institute of Basic Medicine, Shandong Academy of Medical Sciences, Shandong, China (F.L.); Department of Cardiology, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Shaanxi, China (J.M.); and Division of Prevention and Population Sciences, National Heart, Lung, and Blood Institute, Bethesda, MD (C.E.J.). gudongfeng@vip.sina.com tkelly@tulane.edu.