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