1. Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
2. Department of Internal Medicine, Dongsan Medical Center, Daegu, Korea
3. Department of Internal Medicine, Kosin University Gospel Hospital, Busan, Korea
4. Department of Internal Medicine, Inje University Busan Paik Hospital, Busan, Korea
5. Division of Hematology-Oncology, Department of Internal Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea
6. Center of Evidence Based Medicine, Institute of Convergence Science, Yonsei University, Seoul, Korea
7. Department of Internal Medicine, Jeonbuk National University Medical School, Jeonju, Korea
8. Hematology-Oncology Clinic, National Cancer Center, Goyang, Korea
9. Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea
10. Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
11. Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
12. Department of Hematology and Oncology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
13. Department of Hematology and Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea