Letterio D'Arrigo1, Francesco Savoca1, Angela Costa1, Astrid Bonaccorsi1, Antonio Cacciola1, Ernst Witt2, Nazia Gill2, Michele Pennisi1
- 1 Ospedale Cannizzaro, U.O. Urologia (Catania)
- 2 Statistic and Probability Unit - University of Groningen (Groningen )