1. Institute of Dentistry, University of Oulu, Finland
2. Oulu University Hospital, Finland
3. Institute of Dentistry, University of Turku, Finland
4. Fimlab Laboratories, Tampere, Finland
5. Departments of Pathology, Universities of Oulu and Eastern Finland, Finland
6. Institute of Biomedicine, Department of Anatomy and Cell Biology, University of Oulu, Finland