1. Dept. of Abdominal Surgery, Urology Unit, Galliera Hospital, Genoa, Italy
2. Dept of Surgery and Experimental Medicine, Tor Vergata University, Rome, Italy
3. Urology Division, Medical Enterprises Group, Amstelveen, Netherlands
4. Division of Urology, IRCCS S Martino University Hospital-IST National Cancer Research Institute, Genoa, Italy
5. Urology Unit, Umberto I Hospital, Syracuse, Italy
6. Dept of Internal Medicine, Clinical Pharmacology and Toxicology, University of Genoa, Genoa, Italy
7. Dept of Emergency and Organ Transplantation, University of Bari, Bari, Italy
8. Dept of Abdominal Surgery, Urology Unit, Galliera Hospital, Genoa, Italy