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