1. Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
2. Medical School, Nankai University, Tianjin 300071, China
3. Department of Hematology and Oncology, Laoshan Branch, No. 401 Hospital of Chinese PLA, Qingdao 266101, China
4. Department of Blood Transfusion, Chinese PLA General Hospital, Beijing 100853, China