1. Islamic University of Gaza, College of Medicine, Gaza, Palestine.
2. Department of Urology, University Hospital of Wales, Heath Park, Cardiff, Wales.
3. Department of Urology, Jagiellonian University, Cracow, Poland.
4. Department of Tissue Engineering, Nicolaus Copernicus University, Bydgoszcz, Poland.
5. Department of Urology, Nicolaus Copernicus Hospital, Torun, Poland.
6. Department of Urology, Institute of Oncology, Kielce, Poland.
7. Department of Urology, the Medical Centre of Postgraduate Education, Warsaw, Poland.
8. Department of Surgery, Cardiff School of Medicine, Heath Park, Cardiff, Wales.