1. Centre for Oral Clinical Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry Queen Mary University of London London UK
2. Dental School, Department of Medicine and Surgery University of Parma Parma Italy
3. Department of Periodontology, Faculty of Dentistry Dokuz Eylul University Izmir Turkey
4. Department of Medicine and Surgery University of Parma Parma Italy
5. Centre for Research in Toxicology (CERT) University of Parma Parma Italy