[1] Gachon Univ, Gil Hosp, Dept Internal Med, Div Hematol Oncol, Inchon, South Korea
[2] Kosin Univ, Gosep Hosp, Dept Internal Med, Div Hematol Oncol, Busan, South Korea
[3] Chonbuk Natl Univ, Sch Med, Inst Med Sci, Dept Biochem, Jeonju, South Korea
[4] Dalian Univ, Xinhua Hosp, Dept Oncol Med, Dalian 116012, Peoples R China