Affiliation: | 1. Department of Oral & Maxillofacial Surgery, Public Health Service, G?vle, Sweden;2. Centre for Research and Development, Uppsala University/G?vleborg County Council, G?vleborg, Sweden;3. Plastic and Oral & Maxillofacial Surgery, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden;4. Department of Oral & Maxillofacial Surgery, Aalborg University Hospital, Aalborg, Denmark |