1. Department of Cariology, Paedodontics and Endodontology; Institute of Dentistry; University of Oulu; Oulu Finland
2. Department of Oral and Maxillofacial Surgery; Institute of Dentistry; University of Oulu; Oulu Finland
3. Medical Research Center Oulu; Oulu University Hospital and University of Oulu; Oulu Finland
4. Oulu University Hospital; Oulu Finland
5. Institute of Dentistry; University of Oulu; Oulu Finland
6. Department of Oral Development and Orthodontics; Institute of Dentistry; University of Oulu; Oulu Finland