1 Department of Urology, Jules Bordet Institute-Brussels University Hospital, Université Libre de Bruxelles, Brussels, Belgium. romain.diamand@hubruxelles.be.
2 Department of Urology, Jules Bordet Institute-Brussels University Hospital, Université Libre de Bruxelles, Brussels, Belgium.
3 Urology Unit, Department of Surgical Sciences, Policlinico Tor Vergata, Tor Vergata University, Roma, Italy.