1. West China Hospital, Sichuan University; Center of Geriatrics and Gerontology; No. 37, Guo Xue Xiang Chengdu Sichuan China 610041
2. Qionghai Hospital of Chinese Medicine; Department of Cardiology; Hainan China
3. Chengdu Hospital of Tibet; Department of Oncology; No. 20, Xi Mian Qiao Street Chengdu Sichuan China 610041
4. West China Hospital, Sichuan University; Chinese Cochrane Centre, Chinese Evidence-Based Medicine Centre; No. 37, Guo Xue Xiang Chengdu Sichuan China 610041