1. Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
2. College of Medicine, Ewha Womans University, Seoul, Korea
3. Daegu Catholic University School of Medicine, Daegu, Korea
4. Dankook University College of Medicine, Cheonan, Chungcheongnam-do, Korea
5. Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Gangwon-do, Korea
6. Keimyung University School of Medicine, Daegu, Korea
7. Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
8. College of Medicine, The Catholic University of Korea, Seoul, Korea
9. CHA University, Ilsan Medical Center, Ilsan, Gyeonggi-do, Korea
10. Hanyang University College of Medicine, Seoul, Korea