1. Department of Urology, ASL02 Abruzzo, Chieti, Italy.
2. Department of Urology, University “G. d'Annunzio”, Chieti, Italy.
3. Laboratory of Biostatistics, Department of Medical, Oral and Biotechnological Sciences, University “G.d'Annunzio,” Chieti, Italy.
4. Division of Hygiene, Epidemiology and Public Health, Department of Medicine and Science of Aging, University “G. d'Annunzio,” Chieti, Italy.
5. Department of Urology, Humanitas Gavazzeni, Bergamo, Italy.