1. Department of Surgery, Seoul National University College of Medicine, Seoul 03080, Korea.
2. Department of Surgery, Seoul National University Bundang Hospital, Seongnam 13620, Korea.
3. Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 06236, Korea.
4. Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea.
5. Department of Pathology, Seoul National University College of Medicine, Seoul 03080, Korea.