1. Department of Surgery, St. Vincent’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea.
2. Artificial Intelligence and Big-Data Convergence Center, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.
3. Center for Public Healthcare, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.
4. Departement of Preventive Medicine, Gachon University College of Medicine, Incheon, Korea.
5. Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea.