1. Department of Integrative Cancer Therapy and Urology; Kanazawa University Graduate School of Medical Science; Kanazawa Ishikawa Japan
2. Department of Urology; Ofuna Chuou Hospital; Kamakura Kanagawa Japan
3. Division of Male Infertility; Center for Infertility and IVF; International University of Health and Welfare; Nasushiobara Tochigi Japan