1. Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
2. Department of Radiology, Namwon Medical Center, Namwon-Si, Republic of Korea.
3. Department of Clinical Epidemiology and Biostatistics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
4. Department of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
5. Department of Endocrinology and Metabolism, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
6. Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
7. Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.