1. Department of Evidence-Based Medicine and Clinical Epidemiology; West China Hospital; Sichuan University; Chengdu China
2. Second Affiliated Hospital of Chengdu University of TCM; Chengdu University of TCM; Chengdu China
3. Department of Cardiology; Mianyang People's Hospital; Mianyang City China
4. Department of Cardiology; West China Hospital; Sichuan University; Chengdu China