1. Institute of Dentistry; University of Oulu; Oulu Finland
2. Department of Cariology; Restorative Dentistry and Endodontics; Institute of Dentistry; University of Oulu; Oulu University Hospital; Oulu Finland
3. Finnish Defense Forces; Center for Military Medicine; Lahti Finland
4. Santahamina Garrison Health Center; Finnish Defense Forces; Center for Military Medicine; Lahti Finland
5. Department of Mathematical Sciences; University of Oulu; Oulu Finland
6. Department of Cariology; Restorative Dentistry and Endodontics; Institute of Dentistry; University of Turku; Turku Finland
7. Department for Oral and Maxillofacial Surgery (OMFS); Institute of Dentistry; University of Oulu Oulu University Hospital; Oulu Finland