[1] Univ Roma Tor Vergata, Biomed & Prevent, Rome, Italy
[2] IRCCS Policlin San Donato, Operating Theatre, San Donato Milanese, Italy
[3] IRCCS Policlin San Donato, Nursing Degree Course, San Donato Milanese, Italy
[4] European Ist Oncol, Urol, Milan, Italy
[5] European Ist Oncol, Operating Theatre, Milan, Italy
[6] IRCCS Policlin San Donato, Nursing Off, San Donato Milanese, Italy
[7] Univ Pavia, Hyg, I-27100 Pavia, Italy