Guest Editors: Davide Campobasso (Urology Unit of the University Hospital of Parma, Italy), Stefano Puliatti (Urology Department, University of Modena & Reggio Emilia, Modena, Italy), Stefania Ferretti (Endourology & Minimally Invasive Surgery (lap/Rob) Unit, University of Modena & Reggio Emilia, Modena, Italy)