1. Department of Experimental and Clinical Medicine, Research Unit in Periodontology and Periodontal Medicine University of Florence Florence Italy
2. Unit of Periodontology, Department of Medical Biotechnologies University of Siena Siena Italy
3. UniCamillus‐Saint Camillus International University of Health Sciences Rome Italy
4. Section of Occupational Medicine, Department of Public Health University of Naples Federico II Naples Italy
5. Private Practice Roma, Verona Italy
6. Department of Health Sciences, Section of Medical Forensic Sciences University of Florence Florence Italy
7. Private Practice Cesena Italy
8. Department of Periodontology, Università Vita‐Salute San Raffaele Milan Italy
9. Department of General Surgery and Surgical‐Medical Specialties University of Catania (Italy) Catania Italy
10. Private Practice Bari Italy
11. Private Practice Viterbo Italy
12. Private Practice Rome, Campobasso Italy
13. Private Practice Bologna Italy