1. Department of Medical Oral and Biotechnological Sciences “G. D'Annunzio” University Chieti‐Pescara Italy
2. Department of Surgical Sciences C.I.R. Dental School University of Turin Turin Italy
3. Department of Surgical Medical and Molecular Pathology and Critical Care Medicine Sub‐Unit of Periodontology Halitosis and Periodontal Medicine University of Pisa Pisa Italy
4. Department of Oral and Maxillofacial Sciences Section of Periodontics Sapienza University of Rome Rome Italy
5. “Luisa D'Annunzio" Institute for High Culture Pescara Italy