1 Urology Unit, ASST Spedali Civili Hospital, Department of Medical and Surgical Specialties, Radiological Science, and Public Health, University of Brescia , Italy.
2 The Urology Units of D'Annunzio Hospital, University of Chieti , Chieti , Italy.
3 Data Methods and Systems Statistical Laboratory, University of Brescia , Brescia , Italy.
4 San Donato Hospital , Arezzo , Italy.
5 Careggi Hospital, University of Florence , Florence , Italy.
6 San Bassiano Hospital , Bassano Del Grappa , Italy.