[1] Yonsei Univ, Severance Hosp, Coll Med, Div Hematol,Dept Internal Med, Seoul 120752, South Korea
[2] Pusan Natl Univ, Pusan Natl Univ Hosp, Sch Med, Dept Hematol Oncol, Pusan, South Korea
[3] Catholic Univ Korea, Seoul St Marys Hosp, Dept Internal Med, Seoul, South Korea
[4] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Hematol, Seoul, South Korea
[5] Chonnam Natl Univ, Dept Hematol Oncol, Hwasun Hosp, Hwasun, South Korea
[6] Inje Univ, Busan Paik Hosp, Dept Internal Med, Pusan, South Korea
[7] Dong A Univ, Coll Med, Dept Internal Med, Pusan, South Korea
[8] Kosin Univ, Gospel Hosp, Dept Internal Med, Pusan, South Korea
[9] Chonbuk Natl Univ, Sch Med, Dept Internal Med, Jeonju, South Korea
[10] Gachon Univ, Gil Med Ctr, Dept Internal Med, Inchon, South Korea
[11] Keimyung Univ, Sch Med, Dongsan Med Ctr, Dept Internal Med, Taegu, South Korea
[12] Gyeongsang Natl Univ, Gyeongsang Natl Univ Hosp, Sch Med, Dept Internal Med, Jinju, South Korea
[13] Korea Univ, Med Ctr, Dept Internal Med, Seoul, South Korea
[14] Daegu Catholic Univ, Med Ctr, Dept Internal Med, Taegu, South Korea
[15] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Dept Med, Seoul, South Korea
[16] Yeungnam Univ, Coll Med, Dept Internal Med, Taegu, South Korea
[17] Korea Inst Radiol & Med Sci, Korea Canc Ctr Hosp, Dept Internal Med, Seoul, South Korea
[18] Eulji Univ Hosp, Dept Internal Med, Taejon, South Korea
[19] Ewha Womans Univ, Sch Med, Dept Internal Med, Seoul, South Korea
[20] Chungnam Natl Univ, Chungnam Natl Univ Hosp, Coll Med, Dept Internal Med, Taejon, South Korea
[21] Hallym Univ, Sacred Heart Hosp, Dept Internal Med, Anyang, South Korea
[22] Hanyang Univ, Coll Med, Dept Internal Med, Seoul 133791, South Korea