1. Doctor Private Practice; Rome Italy
2. Department of Surgical Sciences (DISC), Division of Prosthodontics; University of Genoa; Genoa Italy
3. Dental Technician Private Practice; Rome Italy
4. Department of Periodontology, University of Pennsylvania; Philadelphia Pennsylvania
5. ARDEC Academy; Rimini Italy
6. Department of Oral surgery and Implantology, University of Valencia; Valencia Spain