1. Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
2. Intestinal Rehabilitation Team, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
3. Department of Pharmaceutical Services, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
4. Department of Clinical Nutrition, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea