1. Department of Urology and Andrology, Kansai Medical University, Hirakata, Japan
2. Department of Urology, Hara Hospital, Kobe, Japan
3. Department of Urology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
4. Department of Urology, Junwakai Memorial Hospital, Miyazaki, Japan
5. Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
6. Shizuoka General Hospital Urology, Shizuoka, Japan