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, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
8. Department of Hematology-Oncology, Ajou University School of Medicine, Suwon, Korea.
9. Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea.
10. Department of Internal Medicine, Kosin University Gospel Hospital, Busan, Korea.
11. Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Korea.
12. Department of Hematology-Oncology, Kyungpook National University Hospital, Daegu, Korea.
13. Department of Internal Medicine, Gachon University, Gil Medical Center, Incheon, Korea.
14. Department of Internal Medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.