1. Division of Cardiology, Chung-Ang University Hospital
2. Division of Hematology and Oncology, University of California Los Angeles
3. Heart Institute, Asan Medical Center, University of Ulsan College of Medicine
4. Department of Internal Medicine, Seoul National University Hospital
5. Division of Cardiology, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University
6. Department of Cardiology, School of Medicine, Ewha Womans University
7. Department of Cardiology, Hanyang University Seoul Hospital
8. Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine
9. Division of Cardiology, Department of Internal Medicine, Korea University Medical Center
10. Division of Cardiology, Department of Internal Medicine, Daegu Catholic University Medical Center
11. Department of Cardiology, Chonnam National University Hospital, Chonnam National University School of Medicine
12. Department of Preventive Medicine, Yonsei University College of Medicine