1. Department of Urology; School of Medicine; University of Ioannina; Ioannina Greece
2. Department of Urology; School of Medicine; University of Crete; Heraklion Crete Greece
3. Genetics and IVF Unit; Department of Obstetrics and Gynaecology; Medical School; University of Ioannina; Ioannina Greece
4. B' Urologic Department; School of Medicine; Aristotle University; Thessaloniki Greece
5. Department of Urology; School of Medicine; Tottori University; Yonago Japan
6. First Pediatric Surgery Clinic; Aghia Sophia Children's Hospital; Athens Greece