Departmentof Surgery;
Samsung Medical Center;
Sungkyunkwan Univer-sity School of Medicine;
Irwon-dong 50;
Gangnam-gu;
Seoul135-710;
South Korea;
Division of Hematology-Oncology;
Depart-ment of Medicine;
Samsung Medical Center;
Sungkyunkwan University School of Medicine;
Irwon-dong 50;
Gangnam-gu;
Seoul 135-710;
South Korea;
Department of Radiation Oncology;
SamsungMedical Center;
Sungkyunkwan University School of Medicine;
Irwon-dong 50;
Gangnam-gu;
Seoul 135-710;
South Korea;