1. Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea.
2. Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea.
3. Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea.
4. Department of Endocrinology and Metabolism, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea.