1. Department of Cariology; Faculty of Odontology; Malmö University; Malmö Sweden
2. Public Dental Service; Region Skåne; Malmö Sweden
3. Department of Cariology, Endodontics; Pediatric Dentistry and Clinical Genetics; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
4. Maxillofacial Unit; Halland Hospital; Halmstad Sweden