First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China. Electronic address: xinli3267@yeah.net. Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China. Electronic address: zhangjian62@medmail.com.cn. First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China. Electronic address: huangjun@njmu.edu.cn. First Affiliated Hospital of Medical College, Xian Jiaotong University, Xian, People's Republic of China. Beijing Hospital, Ministry of Health, Beijing, People's Republic of China. First Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China. Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China. Department of Biostatistics, Peking University Clinical Research Institute, Beijing, People's Republic of China. Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China. First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China. College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China.