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1 Faculty of Odontology, Malmö University, Malmö, Sweden.
2 Institute of Odontology, The Sahlgrenska Academy of Gothenburg, Göteborg, Sweden.
3 Department of Dental Medicine and Academic Centre for Geriatric Dentistry, Karolinska Institutet, Stockholm and Department of Health Sciences, University of Karlstad, Karlstad, Sweden.
1 Faculty of Odontology, Malmö University, Malmö, Sweden.
2 Institute of Odontology, The Sahlgrenska Academy of Gothenburg, Göteborg, Sweden.
3 Department of Dental Medicine and Academic Centre for Geriatric Dentistry, Karolinska Institutet, Stockholm and Department of Health Sciences, University of Karlstad, Karlstad, Sweden.