Affiliation: | 1. Research Centre for the Study of Periodontal and Peri-Implant Diseases, University of Ferrara, Ferrara, Italy;2. Research Centre for the Study of Periodontal and Peri-Implant Diseases, University of Ferrara, Ferrara, Italy Private practice, Rimini, Italy;3. Private practice, Gorizia, Italy;4. Private practice, Palermo, Italy;5. Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy Center of Clinical Epidemiology, University of Ferrara, Italy;6. Research Centre for the Study of Periodontal and Peri-Implant Diseases, University of Ferrara, Ferrara, Italy Operative Unit of Dentistry, University-Hospital of Ferrara, Ferrara, Italy |