[1] Soonchunhyang Univ Hosp Seoul, Coll Med, Dept Internal Med,Div Hematol Oncol, Seoul, South Korea
[2] Hallym Univ, Chuncheon Sacred Heart Hosp, Div Hematol Oncol, Dept Internal Med, Chunchon, South Korea
[3] Dong A Univ, Coll Med, Dept Internal Med, Busan, South Korea
[4] Soonchunhyang Univ Hosp Seoul, Seoul, South Korea
[5] Kangwon Natl Univ Hosp, Sch Med, Dept Internal Med, Chunchon, South Korea
[6] Ewha Womans Univ, Seoul, South Korea
[7] Dankook Univ Hosp, Coll Med, Dept Internal Med, Cheonan, South Korea
[8] Chung Ang Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[9] Korea Canc Ctr Hosp, Dept Internal Med, Seoul, South Korea
[10] Soonchunhyang Univ, Cheonan Hosp, Cheonan, South Korea
[11] Soonchunhyang Univ Hosp Cheonan, Cheonan, South Korea
[12] Soonchunhayng Univ, Coll Med, Bucheon Hosp, Bucheon, South Korea
[13] Chung Ang Univ Hosp, Seoul, South Korea
[14] Dankook Univ Hosp, Cheonan, South Korea
[15] Ajou Univ Hosp, Suwon, South Korea
[16] Gyeongsang Natl Univ Hosp, Sch Med, Div Hematol Oncol, Dept Internal Med, Jinju, South Korea