1. Department of Oral and Maxillofacial Surgery Aalborg University Hospital Aalborg Denmark
2. Department of Clinical Medicine, The Faculty of Medicine Aalborg University Aalborg Denmark
3. Private Practice in Oral Surgery Specialtandlaegerne Seedorffs Straede Aarhus Denmark
4. Department of Oral and Maxillofacial Surgery Red Cross Hospital Kassel Germany
5. Unit of Clinical Biostatistics Aalborg University Hospital Aalborg Denmark
6. Department of Oral and Maxillofacial Surgery NU‐Hospital Organization Trollhättan Sweden
7. Department of Biomaterials, Institute for Surgical Science, The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden