| Affiliation: | 1. Department of Periodontology and Geriatric Dentistry, University of Oulu, Oulu, Finland;2. Medical Research Unit, Sein?joki Central Hospital and University of Tampere, Tampere, Finland;3. Specialist Dental Health Care Unit, Oulu, Finland;4. Department of Medical Microbiology and Immunology, Institute of Diagnostics, University of Oulu, Oulu, Finland;5. Department of Bacteriology and Immunology, Haartman Institute, Laboratory Division (HUSLAB), Helsinki University Central Hospital, Helsinki, Finland;6. Clinical Microbiology Laboratory, Oulu University Hospital, Oulu, Finland;7. Nordlab Oulu, Oulu, Finland;8. Institute of Dentistry, University of Eastern Finland, Kuopio, Finland;9. Department of Oral and Maxillofacial Surgery, Kuopio University Hospital, Kuopio, Finland;10. Oral and Maxillofacial Department, Oulu University Hospital, Oulu, Finland |
