1. Clinic of Fixed and Removable Prosthodontics and Dental Material Science; Center of Dental Medicine; University of Zurich; Zurich Switzerland
2. Department of Periodontics and Prosthodontics; Policlinico Umberto I; Eastman Dental Hospital; Roma Italy
3. ARDEC Academy; Rimini Italy
4. Department of Biomaterials; University of Gothenburg; Gothenburg Sweden
5. Private Practice; Alicante Spain
6. Department of Anatomy and Histology; University Miguel Hernández; Alicante Spain
7. Department of Oral and Maxillofacial Surgery and Department of Implant Dentistry; University Medical Center Groningen, Dental School; University of Groningen; Groningen The Netherlands
8. Clinic of Orthodontics and Pediatric Dentistry; Center of Dental Medicine; University of Zurich; Zurich Switzerland
9. Department of Biomedical; Surgical and Dental Sciences; University of Milan; Milan Italy
10. Private Practice; Paris France
11. Department of Periodontics and Prosthodontics; George Eastman Dental Hospital; Rome Italy
12. Implaneo Dental Center; Munich Germany