1. Department of Surgery, Konkuk University Chungju Hospital, Konkuk University School of Medicine, Chungju, Korea.
2. Department of Surgery, Kangwon University School of Medicine, Chuncheon, Korea.
3. Department of Pediatrics, Konkuk University School of Medicine, Chungju, Korea.
4. Department of Neurology, Konkuk University School of Medicine, Chungju, Korea.
5. Department of Gastroenterology, Konkuk University School of Medicine, Chungju, Korea.
6. Department of Pulmonary and Critical Care Medicine, Konkuk University School of Medicine, Chungju, Korea.