1. Department of Internal Medicine and Cardiovascular Center Seoul National University Hospital Seoul Korea
2. Department of Internal Medicine and Cardiovascular Center Heart Vascular Stroke Institute Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
3. Department of Cardiology Hospital Clínico San Carlos IDISSC and Universidad Complutense de Madrid Spain
4. Department of Internal Medicine Sejong General Hospital Bucheon Korea
5. Department of Internal Medicine and Cardiovascular Center Chosun University Hospital University of Chosun College of Medicine Gwangju Korea
6. Department of Cardiology Ulsan Medical Center Ulsan South Korea
7. Department of Medicine Keimyung University Dongsan Medical Center Daegu Korea
8. Department of Medicine Inje University Ilsan Paik Hospital Goyang Korea
9. Institute on Aging Seoul National University Seoul Korea