1. Specialist Dental Clinic, Folktandvården Sörmland AB Mälar Hospital Eskilstuna Sweden
2. Centre for Clinical Research Sörmland Uppsala University Uppsala Sweden
3. Department of Prosthodontics/Dental Materials Science, Institute of Odontology, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
4. Surgeon General's Department Swedish Armed Forces HQ Stockholm Sweden
5. Dental Research Department, Faculty of Medicine and Health Örebro University Örebro Sweden