1. Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
2. Department of Surgery, Ajou University School of Medicine, Suwon, Korea.
3. Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.
4. Gastric Cancer Center, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea.