1. Division of Oral and Maxillofacial Surgery; Department of Dental Medicine; Karolinska Institutet; Stockholm Sweden
2. Department of Oral and Maxillofacial Surgery; Karolinska University Hospital; Huddinge Sweden
3. Department of Dental Medicine; Karolinska Institutet; Stockholm Sweden
4. Division of Oral and Maxillofacial Surgery; Department of Clinical Dentistry; University of Bergen; Bergen Norway
5. Department of Computer and Sciences; Stockholm University; Stockholm Sweden