1. Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea.
2. Department of Hematology/Oncology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea.
3. Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
4. Department of Hematology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Department of Hematology/Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea.
6. Department of Internal Medicine, Busan Paik Hospital, Inje University, Busan, Korea.
7. Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea.
8. Department of Internal Medicine, Kosin University Gospel Hospital, Busan, Korea.
9. Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Korea.
10. Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea.
11. Department of Internal Medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
12. Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.
13. Department of Internal Medicine, Korea University Medical Center, Seoul, Korea.
14. Department of Internal Medicine, Daegu Catholic University Medical Center, Daegu, Korea.
15. Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
16. Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea.
17. Department of Internal Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul, Korea.
18. Department of Internal Medicine, Eulji University Hospital, Daejeon, Korea.
19. Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea.
20. Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University College of Medicine, Daejeon, Korea.
21. Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea.
22. Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.