1. Nutrition Support Team, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Nutrition services, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Quality Improvement, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Statistics, Korea University, Seoul, Korea.
5. Department of Anesthesiology, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.