1. Division of Cardiology Department of Internal Medicine Severance Cardiovascular Hospital, Yonsei University College of Medicine Seoul Republic of Korea
2. Division of Cardiology Department of Internal Medicine Hallym University Pyeongchon Sacred Heart Hospital Anyang Republic of Korea
3. Department of Internal Medicine Cardiovascular Center Seoul National University Bundang Hospital Seongnam Republic of Korea
4. Department of Internal Medicine Seoul National University Hospital Seoul Republic of Korea
5. Department of Cardiology National Health Insurance Service Ilsan Hospital Goyang Republic of Korea
6. Division of Cardiology Department of Internal Medicine CHA Bundang Medical Center Seongnam Republic of Korea
7. Department of Cardiology Inha University College of Medicine Incheon Republic of Korea
8. Division of Cardiology Department of Internal Medicine Pusan National University Hospital Busan Republic of Korea
9. Department of Internal Medicine Daegu Fatima Hospital Daegu Republic of Korea
10. Division of Cardiology Department of Internal Medicine Wonkwang University School of Medicine Iksan Republic of Korea
11. Division of Cardiology Department of Internal Medicine Dankook University College of Medicine Cheonan Republic of Korea