1. Department of Radiology, University of Ulsan College of Medicine, Seoul, South Korea.
2. Research Institute of Radiology, University of Ulsan College of Medicine, Seoul, South Korea.
3. Department of Radiology, Chung-Ang University College of Medicine, Seoul, South Korea.
4. Department of Pathology, University of Ulsan College of Medicine, Seoul, South Korea.
5. Department of Endocrinology & Metabolism, University of Ulsan College of Medicine, Seoul, South Korea.
6. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.