1. Private Practice Osimo Italy
2. School of Dental HygieneUniversità Politecnica delle Marche Ancona Italy
3. Department of Oral Sciences, Faculty of DentistryUniversity of Otago Dunedin New Zealand
4. Private Practice Silvi Marina (TE) Italy
5. Discipline of Periodontics and Implantology, School of Dentistry and Oral HealthGriffith University Gold Coast QLD Australia