1. Cardiovascular Center, Seoul National University Main Hospital
2. Kyungsang National University Hospital
3. Samsung Medical Center
4. Bundang Hospital
5. Asan Medical Center
6. The Catholic University St Mary's Hospital
7. Gachon University Gil Medical Center
8. Wonju Christian Hospital
9. Yonsei University Severance Hospital
10. Chonnam National University Hospital
11. Ajou University Medical Center