Department of Cardiovascular Medicine, Centre for Epidemiological Studies and Clinical Trials, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, The Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Ruijin 2nd Road 197, Shanghai, 200025, China. Department of Cardiology, Chongming Branch of Shanghai Tenth People's Hospital, Shanghai, China. Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China. Department of Cardiology, Suzhou Hospital of Anhui Medical University (Suzhou Municipal Hospital of Anhui Province), Suzhou, Anhui Province, China. Hypertension Center, Puyang People's Hospital, Puyang, Henan Province, China. Department of Hypertension, Ruijin Hospital North, Shanghai Jiaotong University School of Medicine, Shanghai, China. Department of Cardiovascular Medicine, Centre for Epidemiological Studies and Clinical Trials, State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, The Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Ruijin 2nd Road 197, Shanghai, 200025, China. jiguangwang@rjh.com.cn.