1. Department of Biomedical Informatics, Graduate School of Medicine, CHA University, Seongnam, South Korea
2. Institute for Biomedical Informatics, Graduate School of Medicine, CHA University, Seongnam, South Korea
3. Department of Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, South Korea
4. Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea