1. Department of Cardiology, Dong-A University Hospital, Busan 49201, Republic of Korea
2. Division of Cardiology, Department of Internal Medicine, Pusan National University Hospital, Busan 49241, Republic of Korea
3. Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
4. Cardiovascular Center, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea
5. Division of Cardiology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul 02841, Republic of Korea
6. Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, Seoul 07061, Republic of Korea
7. Cardiovascular Center, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea
8. Division of Cardiology, Department of Internal Medicine, Chonnam National University Hospital and Medical School, Gwangju 61469, Republic of Korea
9. Division of Cardiology, Department of Internal Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul 07441, Republic of Korea
10. Department of Cardiology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
11. Division of Cardiology, Keimyung University Dongsan Medical Center, Daegu 42601, Republic of Korea
12. Division of Cardiology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Seoul 26426, Republic of Korea
13. Department of Cardiology, Chunbuk National University Hospital, Jeonju 54907, Republic of Korea
14. Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul Naional University College of Medicine, Seoul 03080, Republic of Korea