1. Department of Cardiology Dong‐A University Hospital Busan Korea
2. Division of Cardiology Department of Internal Medicine Asan Medical Center Seoul Korea
3. Division of Cardiology Department of Cardiovascular Center Korea University Anam Hospital Seoul Korea
4. Department of Internal Medicine Korea University Ansan Hospital Ansan Korea
5. Department of Cardiology CHA Bundang Medical Center CHA University Seongnam Korea
6. Division of Cardiology Department of Internal Medicine Kyung Hee University Hospital at Gangdong Seoul Korea
7. Division of Cardiology Department of Internal Medicine Pusan National University Hospital Busan Korea
8. Department of Cardiology Ajou University School of Medicine Suwon Korea
9. Division of Cardiology Gachon University Gil Medical Center Incheon Korea
10. Department of Internal Medicine Kyung Hee University Hospital Seoul Korea
11. Cardiovascular Center Dongguk University Ilsan Hospital Goyang Korea
12. Division of Cardiology Department of Internal Medicine Chonnam National University Hospital Gwangju Korea
13. Division of Cardiology Daegu Catholic University Medical Center Daegu Korea
14. Division of Cardiology Department of Internal Medicine Wonju Severance Christian Hospital Yonsei University Wonju College of Medicine Wonju Korea
15. Division of Cardiology Department of Internal Medicine Yeouido St. Mary's Hospital The Catholic University of Korea Seoul Korea
16. Department of Cardiology in Internal Medicine Chungnam National University Hospital Chungnam National University College of Medicine Daejeon Korea
17. Department of Internal Medicine College of Medicine Seoul St. Mary's Hospital The Catholic University of Korea Seoul Korea
18. Department of Internal Medicine Korea University Guro Hospital Seoul Korea
19. Division of Cardiology Department of Internal Medicine Soonchunhyang University Seoul Hospital Seoul Korea
20. Department of Internal Medicine Hanyang University College of Medicine Seoul Korea
21. Division of Cardiology Department of Internal Medicine Pusan National University Yangsan Hospital Yangsan Korea
22. Division of Cardiology Department of Internal Medicine Kangbuk Samsung Hospital Sungkyunkwan University Seoul Korea
23. Department of Internal Medicine College of Medicine Gyeongsang National University Jinju Korea
24. Department of Cardiology Ewha Womans University College of Medicine Seoul Korea
25. Cardiovascular Center Seoul National University Bundang Hospital Seongnam Korea
26. Department of Internal Medicine Busan Paik Hospital Inje University College of Medicine Busan Korea
27. Division of Cardiology Department of Internal Medicine Keimyung University Dongsan Medical Center Daegu Korea
28. Yuhan Research Institute Yuhan Corporation Yongin Korea
29. Division of Cardiology Department of Internal Medicine Seoul National University Hospital Seoul National University College of Medicine Seoul Korea