1. Department of Internal Medicine; Gyeongsang National University College of Medicine; Changwon Korea
2. Department of Internal Medicine; Pusan National University College of Medicine; Busan Korea
3. Department of Internal Medicine; Yonsei University Wonju College of Medicine; Kangwon Korea
4. Department of Internal Medicine; Seoul National University College of Medicine; Seoul Korea
5. Department of Internal Medicine; Seoul National University Boramae Medical Center; Seoul Korea
6. Department of Internal Medicine; Yonsei University College of Medicine; Seoul Korea
7. Department of Internal Medicine; The Catholic University of Korea College of Medicine; Seoul Korea
8. Department of Internal Medicine; Kyungpook National University School of Medicine; Daegu Korea
9. Department of Internal Medicine; Chosun University Hospital; Gwangju Korea
10. Department of Internal Medicine; Hallym University Sacred Heart Hospital; Pyeongchon Korea
11. Department of Internal Medicine; Gachon University, Gil Hospital; Incheon Korea
12. Department of Internal Medicine; Dongguk University Medical Center; Goyang Korea
13. Medical Department; Sanofi-Aventis Korea; Seoul Korea