1. Hospice Research Center of Tianjin Medical University, Tianjin, China
2. State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
3. Tianjin Institutes of Health Science, Tianjin, China
4. Department of Mathematics and Statistics, La Trobe University, Melbourne, Australia.