1. Department of Surgery, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Institue of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Korea.
3. Department of Pathology, Gyeongsang National University School of Medicine, Jinju, Korea.
4. Department of Diagnostic Radiology, Gyeongsang National University School of Medicine, Jinju, Korea.