1. Division of Cardiology Cardiovascular Center Seoul National University Bundang Hospital Seongnam Republic of Korea
2. Department of Family Medicine Inje University Seoul Paik Hospital Seoul Republic of Korea
3. Department of Internal Medicine Seoul National University Hospital Seoul Republic of Korea
4. Heart Research Center of Chonnam National University Gwangju Republic of Korea
5. Yonsei University Wonju College of Medicine Wonju Republic of Korea
6. Yonsei University College of Medicine Seoul Republic of Korea
7. Department of Internal Medicine The Catholic University of Korea Seoul Republic of Korea
8. Department of Internal Medicine Sungkyunkwan University College of Medicine Seoul Republic of Korea
9. Division of Cardiology Asan Medical Center Seoul Republic of Korea
10. Chungbuk National University College of Medicine Cheongju Republic of Korea
11. Kyungpook National University College of Medicine Daegu Republic of Korea
12. Mediplex Sejong Hospital Incheon Republic of Korea