1 Department of Hematology, Beijing Tongren Hospital, Capital Medical University, No. 1 Dong Jiao Min Xiang Street, Dong Cheng District, Beijing, 100730, China.
2 Department of Hematology, Beijing Tongren Hospital, Capital Medical University, No. 1 Dong Jiao Min Xiang Street, Dong Cheng District, Beijing, 100730, China. Electronic address: wjwtrxy@126.com.