Giuseppina Campisi1
, Martina Chiappelli2
, Massimo De Martinis3
, Vito Franco4
, Lia Ginaldi3
, Rosario Guiglia1
, Federico Licastro2
and Domenico Lio5 
1
University of Palermo, Department of Oral Sciences, Palermo, Italy
2
University of Bologna, Department of Experimental Pathology, Bologna, Italy
3
University of L'Aquila, Department of Internal Medicine and Public Health, L'Aquila, Italy
4
University of Palermo, Department of Human Pathology, Palermo, Italy
5
University of Palermo, Department of Pathobiology and Biomedical Methodologies, Palermo, Italy