[1] Peking Univ Third Hosp, Dept Hematol, Beijing, Peoples R China
[2] Chinese Acad Med Sci & Peking Union Med Coll, Dept Hematol, Peking Union Med Coll Hosp, Beijing, Peoples R China
[3] Chinese Acad Med Sci, Dept Hematol, Beijing Hosp, Natl Ctr Gerontol,Inst Geriatr Med, Beijing, Peoples R China
[4] Dalian Med Univ, Second Hosp, Dalian, Peoples R China
[5] Peking Univ First Hosp, Dept Hematol, Beijing, Peoples R China