1. Private Practice Verona and Roma Italy
2. Department of Biomedical and Dental Sciences and Morphofunctional Imaging University of Messina Messina Italy
3. Research Unit in Periodontology and Periodontal Medicine, Department of Experimental and Clinical Medicine University of Florence Florence Italy
4. Department of Medical Biotechnologies, Unit of Periodontology University of Siena Siena Italy
5. Department of Biomedical, Surgical and Dental Sciences University of Milan Milan Italy
6. Department of General Surgery and Medical‐Surgical Specialties University of Catania Bari Italy
7. Private Practice Bari Italy
8. Private Practice Viterbo Italy
9. Private Practice Campobasso and Roma Italy
10. Private Practice Bologna Italy