[1] Univ Milan, Osped San Paolo, Dipartimento Med & Chirurg Odontoiatria, I-20142 Milan, Italy
[2] Univ Milan, Osped San Paolo, Ist Anat Patol, I-20142 Milan, Italy
[3] Univ Milan, Osped San Paolo, Ist Sci Radiol, I-20142 Milan, Italy
[4] Policlin San Matteo, IRCCS, Lab Informat Med, I-27100 Pavia, Italy