1. Department of Urology and Andrology, Kansai Medical University, Osaka, Japan.
2. Department of Nursing Unit, Kansai Medical University, Kori Hospital, Osaka, Japan.
3. Department of Urology, Ohguchi Higashi General Hospital, Yokohama, Japan.
4. Department of Biomedical Engineering Biomechanical Engineering Nanodevice Engineering, Tottori University Graduate School, Tottori, Japan.