[1] Yonsei Univ, Div Med Oncol, Yonsei Canc Ctr, Coll Med, Seoul, South Korea
[2] Univ Ulsan, Asan Med Ctr, Oncol, Coll Med, Seoul, South Korea
[3] Catholic Univ Korea, Dept Internal Med, Seoul St Marys Hosp, Catholic Med Ctr, Seoul, South Korea
[4] Ulsan Univ Hosp, Div Hematol Oncol, Dept Internal Med, Ulsan, South Korea
[5] Mahidol Univ, Fac Med, Div Med Oncol, Dept Med,Siriraj Hosp, Bangkok, Thailand
[6] Seoul Natl Univ, Internal Med, Bundang Hosp, Seongnam, South Korea
[7] Taipei Vet Gen Hosp, Div Med Oncol, Dept Oncol, Taipei, Taiwan
[8] Inje Univ, Div Oncol, Dept Internal Med, Haeundae Paik Hosp, Busan, South Korea
[9] Gangneung Asan Hosp, Med Oncol Dept, Kangnung, South Korea
[10] Chinese Univ Hong Kong, Clin Oncol Dept, Sha Tin, Sino Bldg, Hong Kong, Peoples R China
[11] Korea Univ Anam Hosp, Dept Hemato oncol, Seoul, South Korea
[12] NCCS Natl Canc Ctr Singapore, Div Med Oncol, Singapore, Singapore
[13] Pusan Natl Univ, Internal Med, Yangsan Hosp, Yangsan, South Korea
[14] NTUH Natl Taiwan Univ Hosp, Dept Oncol, Hsin Chu Branch, Hsinchu, Taiwan
[15] Chonnam Natl Univ, Div Hematol & Oncol, Med Sch, Hwasun, South Korea
[16] Chonnam Natl Univ, Hwasun Hosp, Hwasun, South Korea
[17] Chonnam Natl Univ Hwasun Hosp, Hwasun, South Korea
[18] Chungbuk Natl Univ Hosp, Hematol Oncol, Cheonju-si, South Korea
[19] Samsung Med Ctr SMC, Div Hematol Oncol, Seoul, South Korea
[20] Catholic Univ Korea, Internal Med Dept, Seoul St Marys Hosp, Catholic Med Ctr, Seoul, South Korea