1. Department of Cardiology, West China Hospital Sichuan University Chengdu China
2. Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
3. Department of Geriatrics, West China Hospital Sichuan University Chengdu China
4. Cardiovascular Medicine, Wexner Medical Center, College of Medicine The Ohio State University Columbus Ohio