[1] Univ Turin Italy, AOU Citta Salute Sci Molinette Hosp, Urol Dept, Corso Bramante 88, I-10126 Turin, Italy
[2] Monash Univ, Dept Surg, Melbourne Australia Wellington Rd, Clayton, Vic 3800, Australia
[3] Alfred Hosp, Dept Urol, 55 Commercial Rd, Melbourne, Vic 3004, Australia
[4] Univ Turin, AOU Citta Salute Sci Molinette Hosp, Dept Neurourol, Spinal Cord Unit, Via Zuretti 24, I-10126 Turin, Italy