1. Department of Oral Surgery and Implant Dentistry; School of Dentistry; University of Granada; Granada Spain
2. Department of Oral & Maxillofacial Surgery; The Institute for Postgraduate Education; Jönköping Sweden
3. Restorative Dentistry; University of Bristol Dental School; Bristol UK
4. Department of Oral & Maxillofacial Surgery; University Hospital (Rigshospitalet); Copenhagen Denmark
5. Department of Oral and Maxillofacial Surgery; University Hospital Ulm and Department of Oral and Plastic Maxillofacial Surgery; German Federal Armed Forces Hospital; Ulm Germany
6. Oral Surgery and Implantology Fondazione IRCSS Ca’ Granda Ospedale Maggiore Policlinico Milano; University of Milan; Milan Italy