1. Division of Cardiology, Department of Internal Medicine, Pusan National University Yangsan Hospital, 20, Geumo-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, Korea
2. Division of Cardiology, Department of Internal Medicine, Keimyung University Dongsan Medical Center, 56, Dalseong-ro, Jung-gu, Daegu, Korea
3. Division of Cardiology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Korea
4. Division of Cardiology, Department of Internal Medicine, Dong-A University Medical Center, 26, Daesingongwon-ro, Seo-gu, Busan, Korea
5. Division of Cardiology, Department of Internal Medicine, Inje University Haeundae Paik Hospital, Inje University College of Medicine, 875, Haeun-daero, Haeundae-gu, Busan, Korea
6. Division of Cardiology, Department of Internal Medicine, Kyungpook National University Hospital, 130, Dongdeok-ro, Jung-gu, Daegu, Korea
7. Division of Cardiology, Department of Internal Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, Korea
8. Division of Cardiology, Department of Internal Medicine, Daegu Catholic University Medical Center, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, Korea
9. Division of Cardiology, Department of Internal Medicine, Inje University Busan Paik Hostpital, 75, Bokji-ro, Busanjin-gu, Busan, Korea
10. Division of Cardiology, Department of Internal Medicine, Kosin University Gospel Hospital, 262, Gamcheon-ro, Seo-gu, Busan, Korea
11. Division of Cardiology, Department of Medicine, Daegu Fatima Hospital, 99, Ayang-ro, Dong-gu, Daegu, Korea