1. Department of Pathology; Soonchunhyang University Cheonan Hospital; Cheonan Korea
2. Department of Urology; Soonchunhyang University Cheonan Hospital; Cheonan Korea
3. Department of Pathology; Chung-Ang University Hospital; Chung-Ang University College of Medicine; Seoul Korea
4. Department of Urology; Chung-Ang University Hospital; Chung-Ang University College of Medicine; Seoul Korea