1. Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
2. Sungkyunkwan University School of Medicine, Seoul, Korea
3. Yonsei University College of Medicine, Seoul, Korea
4. Hanyang University College of Medicine, Seoul, Korea
5. Ajou University School of Medicine, Suwon, Gyeonggi-do, Korea
6. Wonkwang University College of Medicine, Iksan, Jeollabuk-do, Korea
7. Inje University College of Medicine, Busan, Korea
8. Korea University College of Medicine, Seoul, Korea
9. Chonnam National University College of Medicine, Gwangju, Korea
10. Seoul National University College of Medicine, Seoul, Korea
11. Pusan National University College of Medicine, Busan, Korea
12. University of Ulsan College of Medicine, Seoul, Korea
13. Chungnam National University College of Medicine, Daejeon, Korea
14. Konkuk University College of Medicine, Seoul, Korea
15. Soonchunhyang University College of Medicine, Seoul, Korea
16. Chonbuk National University College of Medicine, Jeonju, Jeollabuk-do, Korea
17. Kyungpook National University College of Medicine, Daegu, Korea
18. Inha University College of Medicine, Incheon, Korea