[1] Hallym Univ, Kangdong Sacred Heart Hosp, Div Hematooncol, Dept Internal Med,Coll Med, Seoul, South Korea
[2] Catholic Univ Korea, Seoul ST Marys Hosp, Oncol, Seoul, South Korea
[3] Sungkyunkwan Univ, Kangbuk Samsung Hosp, Internal Med, Sch Med, Seoul, South Korea
[4] Keimyung Univ, Sch Med, Internal Med, Dongsan Med Ctr, Daegu, South Korea
[5] Catholic Univ Korea, St Vincents Hosp, Dept Med Oncol, Coll Med, Suwon, South Korea
[6] Yonsei Univ, Div Med Oncol, Dept Internal Med, Coll Med, Seoul, South Korea
[7] Pusan Natl Univ, Sch Med, Internal Med, Pusan Natl Univ Hosp, Busan, South Korea
[8] Ajou Univ, Sch Med, Hematol Oncol, Ajou Univ Hosp, Suwon, South Korea
[9] Chungnam Natl Univ, Sch Med, Daejeon, South Korea
[10] Chungnam Natl Univ Hosp, Dept Internal Med, Daejeon, South Korea
[11] Samsung Med Ctr, Hematol & Oncol, Seoul, South Korea
[12] ASAN Med Ctr, Clin Epidemiol & Biostat, Seoul, South Korea