1. Division of Paediatric Dentistry; Department of Dental Medicine; Karolinska Institutet; Huddinge Sweden
2. Department of Paediatric Dentistry; Eastmaninstitutet; Stockholm Sweden
3. Division of Periodontology; Department of Dental Medicine; Karolinska Institutet; Huddinge Sweden
4. Center for Infectious Medicine; Department of Medicine; Karolinska University Hospital; Huddinge Sweden