1. Oral Microbiology and Biomaterials Laboratory, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
2. Department of Medical Sciences, University of Ferrara, Ferrara, Italy
3. Department of Clinical Sciences and Stomatology, Polytechnic University of Marche, Ancona, Italy
4. Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy