1. Chonnam National University Hospital, Gwangju, Korea.
2. Korea Cardiovascular Stent Research Institute of Chonnam National University, Gwangju, Korea.
3. Yeungnam University Hospital, Daegu, Korea.
4. Kyungpook National University Hospital, Daegu, Korea.
5. Pusan National University Hospital, Busan, Korea.
6. Chungnam National University Hospital, Daejeon, Korea.
7. Chunbuk National University Hospital, Jeonju, Korea.
8. Kyung Hee University Hospital, Seoul, Korea.
9. Chungbuk National University Hospital, Cheongju, Korea.
10. Korea University Guro Hospital, Seoul, Korea.
11. Konyang University, Daejeon, Korea.
12. The Catholic University of Korea, Seoul St. Mary's Hospital, Seoul, Korea.
13. Asan Medical Center, Seoul, Korea.