1. Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
2. Department of Surgery, CHA Bundang Hospital, CHA University School of Medicine, Seoul, Republic of Korea (current address)
3. Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
4. Biostatistics, Samsung Medical Center, Seoul, Republic of Korea
5. Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, North Carolina, USA
6. Gastric Cancer Branch, Division of Translational & Clinical Research, National Cancer Center, Seoul, Republic of Korea