1. Department of Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
2. Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
3. Department of Non-Clinical Study, CKD Research Institute, CKD Pharmaceutical Co., Yongin, Korea
4. Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea