1. Department of Urology, Fukushima Medical University, Fukushima, Japan
2. Department of Urology, Johannes Gutenberg University Medical Center, Mainz, Germany
3. Department of Gynecology and Obstetrics, Johannes Gutenberg University Medical Center, Mainz, Germany
4. Department of Pathology, Shizuoka Cancer Center, Shizuoka, Japan
5. Advanced Clinical Research Center, Fukushima Medical University, Fukushima, Japan
6. Center for Pediatrics and Adolescent Medicine, Johannes Gutenberg University Medical Center, Mainz, Germany