1. BioMedical Research Institute, Kyungpook National University Hospital, Daegu, South Korea
2. Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, South Korea
3. Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
4. Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea