1. Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China.
2. Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea.
3. Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4. Department of Cardiology, China-Japan Union Hospital of Jilin University, Jilin, China.
5. Department of Internal Medicine, Sejong General Hospital, Bucheon, Korea.
6. Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
7. Institute on Aging, Seoul National University, Seoul, Korea.