1. Department of Orthodontics Universitätsklinikum Düsseldorf Düsseldorf Germany
2. Department of Oral Surgery University of Birmingham Birmingham UK
3. Oral Surgery Department Birmingham Community Healthcare NHS Foundation Trust Birmingham Dental Hospital Birmingham UK
4. Department of Neurosciences, Dentistry Section University of Padova Padova Italy
5. Department of Oral Surgery Universitätsklinikum Düsseldorf Düsseldorf Germany
6. Faculty of Odontology Malmo University Malmo Sweden
7. Department of Dental Medicine Karolinska Institutet Stockholm Sweden