1. Peking University People's Hospital, Peking University Institute of Hematology, Department of Hematology, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Xicheng District, Beijing 100044, China
2. Peking University Health Science Center, Beijing 100191, China
3. Peking-Tsinghua Center for Life Sciences, Beijing 100871, China.