Affiliation: | 1. School of Health and Society, Department of Oral Health Sciences, Kristianstad University, Kristianstad, Sweden;2. School of Dental Science, Trinity College, Dublin, Ireland;3. Blekinge Institute of Technology, Karlskrona, Sweden;4. Departments of Periodontics, and Oral Medicine, School of Dentistry, University of Washington, Seattle, WA, USA |