1. Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
2. Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
3. Department of Restorative Dentistry and Cariology, Adhesive Dentistry Research Group, Institute of Dentistry, University of Turku and Turku University Hospital, Turku, Finland
4. Department of Oral Pathology and Radiology, University of Turku, Turku, Finland
5. HUS Medical Imaging Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland