1. Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, Helsinki, Finland
2. New Children's Hospital, Helsinki University Hospital, Helsinki, Finland
3. Department of Maxillofacial Surgery, Päijät-Häme Central Hospital, Päijät-Häme Joint Authority for Health and Wellbeing, Lahti, Finland
4. Clinicum, University of Helsinki, Helsinki, Finland
5. Department of Pediatrics, Tampere University Hospital, Tampere, Finland