1. Institute of Dentistry; University of Oulu; Oulu Finland
2. Department of Bacteriology and Immunology; Haartman Institute; Helsinki University Hospital; University of Helsinki; Helsinki Finland
3. Medical Research Center Oulu; Oulu University Hospital; University of Oulu; Oulu Finland
4. Department of Oral and Maxillofacial Diseases; Helsinki University Hospital; University of Helsinki; Helsinki Finland
5. Division of Periodontology; Department of Dental Medicine; Karolinska Institute; Huddinge Sweden
6. Extracta Ltd; Vantaa Finland
7. Manchester Academic Health Science Centre; Institute of Inflammation and Repair; The University of Manchester; Manchester UK
8. University Hospital of South Manchester; Manchester UK