1. Department of Internal Medicine, Ewha Womans University Seoul Hospital, Seoul, Republic of Korea
2. Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
3. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
4. Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
5. Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
6. Department of Infectious Diseases, Chonnam National University Hospital, Gwangju, Republic of Korea
7. Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
8. Division of Infectious Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, Republic of Korea
9. Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Republic of Korea
10. Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
11. Department of Internal Medicine, Pusan National University School of Medicine and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
12. Department of Internal Medicine, Inje University Haeundae Paik Hospital, Busan, South Korea
13. Department of Internal Medicine, Daegu Fatima Hospital, Daegu, South Korea