[1] Chung Ang Univ, Dept Internal Med, Coll Med, Seoul, South Korea
[2] Chung Ang Univ, Dept Radiol, Coll Med, Seoul, South Korea
[3] Chung Ang Univ, Dept Surg, Coll Med, Seoul, South Korea
[4] Chung Ang Univ, Chung Ang Univ Hosp, Div Hematol Oncol, Dept Internal Med,Coll Med, Seoul, South Korea