1. The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
2. The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
3. Department of Cardiology, The General Hospital of Jincheng Anthracite Mining Group Co. Ltd., Jincheng 048006, China
4. Capital Medical University Affiliated Beijing Anzhen Hospital, Beijing 100029, China
5. College of Life Sciences, Beijing Normal University, Beijing 100875, China
6. Department of Cardiology, Shanxi Medical University, Taiyuan, Shanxi 030001, China