1. Department of Geriatric Cardiology, General Hospital of Southern Theater Command, Guangzhou, China
2. Branch of National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Guangzhou, China
3. Guangzhou Key Laboratory of Cardiac Rehabilitation, Guangzhou, China
4. The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
5. School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
6. Graduate School, Guangzhou University of Chinese Medicine, Guangzhou, China