1. Division of Cardiology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine
2. Samsung Changwon Hospital, Sungkyunkwan University School of Medicine
3. Myongji Hospital
4. Daegu Catholic University Medical Center
5. Seoul National University Boramae Medical Center
6. Chungnam National University Hospital
7. Konyang University Hospital
8. Inje University Sanggye Paik Hospital
9. St. Carollo General Hospital
10. SAM Medical Center
11. Inje University Haeundae Paik Hospital
12. Seoul Veterans Hospital
13. Yeungnam University Hospital
14. Chungju Konkuk University Medical Center
15. Chung-Ang University Hospital
16. Inje University Ilsan Paik Hospital