1. Reproduction Center International University of Health and Welfare Hospital NasushiobaraJapan
2. Department of Urology Tsukuba Gakuen Hospital TsukubaJapan
3. Suzuki Memorial Hospital IwanumaJapan
4. Prefectural Art Museum Mae Ladies Mental Clinic ShizuokaJapan
5. Department of Urology University of Tsukuba TsukubaJapan
6. Department of Urology School of Medicine International University of Health and Welfare NaritaJapan
7. Division of Male Infertility Sanno Hospital Center for Human Reproduction International University of Health and Welfare Tokyo Japan