1. Department of Surgery, Korea University College of Medicine
2. Division of Foregut Surgery, Department of Surgery, Korea University Anam Hospital
3. Genomics and Digital Health, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul
4. Department of Anesthesiology and Pain Medicine, Korea University Anam Hospital
5. Division of Foregut Surgery, Department of Surgery, Korea University Ansan Hospital, Ansan, Republic of Korea
6. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University Anam Hospital
7. Department of Biostatistics, Korea University College of Medicine
8. Department of Surgery, Chung-Ang University College of Medicine