[1] Yonsei Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[2] Yonsei Univ, Coll Med, Dept Radiat Oncol, Seoul, South Korea
[3] Yonsei Univ, Coll Med, Dept Diagnost Radiol, Seoul, South Korea
[4] Yonsei Univ, Coll Med, Liver Canc Study Grp, Seoul, South Korea
[5] Kwandong Univ, Coll Med, Dept Internal Med, Goyang, South Korea