1. School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Department of Urology, University Hospital, LMU Munich, 81377 Munich, Germany
3. Department of Gynecology & Obstetrics, Buelach Hospital, 8180 Bülach, Switzerland
4. Department of Gynecology, Obstetrics and Reproductive Medicine, Saarland University Hospital, 66421 Homburg, Germany
5. First Department of Urology, G. Gennimatas Hospital, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
6. Institute for the Study of Urological Diseases, 54622 Thessaloniki, Greece