1 State Key Laboratory of Experimental Hematology, Institute of Hematology & Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China.
2 State Key Laboratory of Experimental Hematology, Institute of Hematology & Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China; Stem Cell Medicine Center, Chinese Academy of Medical Sciences, Tianjin 300020, China; Department of Stem Cell and Regenerative Medicine, Peking Union Medical College, Tianjin 300020, China.