1. Department of Nutrition Care, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea.
2. Department of Nutrition Services, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea.
3. Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea.
4. Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin 17046, Korea.