1. Department of Hematology-Oncology, Pusan National University Hospital, Busan, Korea.
2. Department of Hematology, Kyungpook National University Hospital, Daegu, Korea.
3. Department of Hematology, Chonnam National University Hwasun Hospital, Hwasun, Korea.
4. Department of Hematology, Chungnam Nastional Ujnversity Hospital, Daejeon, Korea.
5. Department of Hematology, Gachon University Gil Medical Center, Incheon, Korea.
6. Department of Hematology, Gyeong-Sang National University Hospital, School of Medicine, Gyeongsang Natioinal University, Jinju, Korea.