1. Department of Internal Medicine, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
2. Department of Radiology, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
3. Department of Pathology, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.