[1] Yonsei Univ, Coll Med, Dept Surg, Seoul 120752, South Korea
[2] Shanghai Jiao Tong Univ, Sch Med, Rui Jin Hosp, Dept Surg, Shanghai 20025, Peoples R China
[3] Canc Metastasis Res Ctr, Seoul 120752, South Korea
[4] Yonsei Univ, Coll Med, Brain Korea 21 Project Med Sci, Seoul 120752, South Korea
[5] Zhejiang Univ, Coll Med, Sir Run Run Shaw Hosp, Dept Surg Oncol, Hangzhou 310016, Zhejiang, Peoples R China