1. Department of Orthodontics and Dentofacial Orthopedics Charité – University Medicine Berlin Berlin Germany
2. Department of Oral Surgery University of Liverpool Liverpool UK
3. Department of Dental Medicine, Division of Oral Health and Periodontology Karolinska Institutet Huddinge Sweden
4. Faculty of Odontology Malmo University Malmo Sweden
5. Medical Unit of Plastic Surgery and Oral and Maxillofacial Surgery Karolinska University Hospital Stockholm Sweden
6. Department of Dental Medicine, Division of Oral Diagnostics and Surgery Karolinska Institutet Huddinge Sweden
7. Department of Oral Surgery University Hospital Düsseldorf Düsseldorf Germany
8. Department of Neurosciences, Dentistry Section University of Padova Padova Italy