1. Division of Urology, Department of Organ Therapeutics, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.
2. Department of Urology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan.
3. Division of Infectious Disease, Department of International Health Science, Kobe University Graduate School of Health Science, Kobe, Japan.
4. Department of Urology, Sanda Municipal Hospital, Sanda, Japan.