1. Division of PeriodontologyDepartment of Dental MedicineKarolinska InstitutetHuddingeSweden
2. Division of Pediatric DentistryKarolinska InstitutetHuddingeSweden
3. Division of Image and Functional Odontology and Oral PathologyKarolinska InstitutetHuddingeSweden
4. Department of Periodontology at SkanstullStockholm County CouncilStockholmSweden
5. MedicinTeknik ABStockholmSweden
6. Center for Infectious MedicineKarolinska InstitutetHuddingeSweden