[1] Tianjin Med Univ, Gen Hosp, Dept Gastroenterol & Hepatol, 154 Anshan Rd, Tianjin 300052, Peoples R China
[2] Chinese Acad Med Sci, Inst Hematol, Dept Leukaemia, Tianjin 300020, Peoples R China
[3] Chinese Acad Med Sci, Blood Dis Hosp, Tianjin 300020, Peoples R China
[4] Peking Union Med Coll, Tianjin 300020, Peoples R China