1. Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
2. Deprtment of Surgery, Icahn School of Medicine at Mount Sinai, The Mount Sinai Hospital, New York, NY, USA.
3. Department of Surgery, Seoul National University Hospital, Seoul, Korea.
4. Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
5. Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
6. Department of Surgery, Seoul National University Boramae Medical Center, Seoul, Korea.