[1] Hanyang Univ, Coll Med, Seoul, South Korea
[2] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Seoul, South Korea
[3] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Oncol, Seoul, South Korea
[4] Soonchunhyang Univ, Coll Med, Seoul, South Korea
[5] Chonnam Natl Univ Hwasun Hosp, Dept Hematol Oncol, Hwasun, South Korea
[6] Dongsan Med Ctr, Daegu, South Korea
[7] Inje Univ, Coll Med, Busan, South Korea
[8] Catholic Univ Korea, St Vincents Hosp, Suwon, South Korea
[9] Yeungnam Univ Med Ctr, Daegu, South Korea
[10] Univ Ulsan, Coll Med, Ulsan Univ Hosp, Ulsan, South Korea
[11] Seoul Natl Univ Hosp, Seoul, South Korea