1. Department of Internal Medicine, College of Medicine; Chungbuk National University; Cheongju; South Korea
2. Department of Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Cheongwon; South Korea
3. Department of Radiology, College of Medicine; Chungbuk National University; Cheongju; South Korea
4. Department of Pathology, College of Medicine; Chungbuk National University; Cheongju; South Korea
5. Department of Urology, College of Medicine; Chungbuk National University; Cheongju; South Korea