1 Peking University Institute of Hematology, Peking University People's Hospital, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplant, Beijing, China.
2 Peking-Tsinghua Centre for Life Sciences, Beijing, China.
3 Peking University Institute of Hematology, Peking University People's Hospital, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplant, Beijing, China. lpxu_0415@sina.com.