1. Department of Internal Medicine, East-West Neo Medical Center, Kyunghee University College of Medicine, Seoul, Korea.
2. Department of Radiology, East-West Neo Medical Center, Kyunghee University College of Medicine, Seoul, Korea.
3. Department of Surgery, East-West Neo Medical Center, Kyunghee University College of Medicine, Seoul, Korea.
4. Department of Pathology, East-West Neo Medical Center, Kyunghee University College of Medicine, Seoul, Korea.