1. Third Department of Urology, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece
2. Laboratory of Spermatology, Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
3. Department of Obstetrics and Gynecology, Royal Cornwall Hospital, Truro TR1 3LJ, UK
4. Medical School, National and Kapodistrian University of Athens, 12462 Athens, Greece
5. Department of Obstetrics and Gynaecology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
6. Department of Urology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
7. Third Department of Obstetrics and Gynecology, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece
8. Vascular Biology, Molecular and Clinical Sciences Research Institute, St George’s University of London, London SW17 0RE, UK