1. Department of Hypertension, The Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Ruijin 2nd Road 197, Shanghai 200025, China
2. Department of Cardiology, Datong Fourth People's Hospital, No.16, Yongtai South Road, Pingcheng District, Datong 037008, Shanxi Province, China
3. Department of Cardiology, Second Hospital of Shanxi Medical University, No.382, Wuyi Road, Taiyuan 030001, Shanxi Province, China
4. Department of Hypertension, Henan Provincial People's Hospital, No.7, Weiwu Road, Zhengzhou 450003, Henan Province, China
5. Department of Hypertension, Fuwai Hospital, 167 Beilishi Road, Xicheng District, Beijing 100037, China
6. Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, 23 Post Street, Nangang District, Harbin 150081, Heilongjiang Province, China
7. Department of Cardiology, People's Hospital of Hongsibao District, No. 004, Wenhua Street, Hongsibao District, Wuzhong 751900, Ningxia Province, China
8. Department of Hypertension, Lanzhou University Second Hospital, Cuiyingmen 82, Chengguan District, Lanzhou 730030, Gansu Province, China
9. Department of Cardiology, The First Affiliated Hospital of Xiamen University, Zhenhai Road 55, Siming District, Xiamen 361003, Fujian Province, China
10. Imperial Clinical Trials Unit, Imperial College London, Stadium House, 68 Wood Lane, London W12 7RH, UK
11. Department of Primary Care and Public Health, Imperial College London, St Dunstan’s Road, London W6 8RP, UK