Affiliation: | 1. Department of Maxillofacial Radiology, Faculty of Dentistry, University of Oslo, Norwayingrch@odont.uio.no;3. Department of Maxillofacial Radiology, Faculty of Dentistry, University of Oslo, Norway;4. Department of Clinical Periodontology, Faculty of Dentistry, University of Oslo, Norway;5. Faculty of Dentistry, University of Oslo, Norway |