1. Division of Urology; O.L.V. Vattikuti Robotic Surgery Institute; Aalst Belgium
2. Division of Urology; University of Eastern Piedmont, Maggiore della Carità Hospital; Novara Italy
3. Division of Urology; University of Torino, San Luigi Hospital; Orbassano Italy
4. Division of Urology; University of Udine; Udine Italy