1. Department of Oral Microbiology and Immunology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
2. Department of Orofacial Pain, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
3. Department of Oral Medicine and Pathology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
4. Department of Behavioral and Community Dentistry, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
5. Centre of Gerodontology, Public Dental Service, Region Västra Götaland, Sweden