1. Heart Center of Chonnam National University Hospital
2. Department of Internal Medicine, Kyungpook National University Hospital
3. Cardiovascular Center University Guro Hospital
4. Department of Internal Medicine, Seoul National University Hospital
5. Department of Cardiology, Yeungnam University Medical Center
6. Cardiology Division, Department of Internal Medicine, Chungbuk National University Hospital
7. Department of Internal Medicine, Kyunghee University College of Medicine
8. Department of Internal Medicine, Yonsei University Wonju College of Medicine
9. Division of Cardiovascular and Rare Diseases, Center for Biomedical Sciences, National Institute of Health