1. Prosthetic Dentistry; Department of Odontology; Faculty of Medicine; Umeå University; Umeå Sweden
2. Department of Integrative Medical Biology; Faculty of Medicine; Umeå University; Umeå Sweden
3. Section of Oral Microbiology and Immunology; Institute of Oral Biology; Center of Dental Medicine; University of Zürich; Zürich Switzerland
4. Department of Natural Sciences; Mid Sweden University; Sundsvall Sweden
5. Molecular Periodontology; Department of Odontology; Faculty of Medicine; Umeå University; Umeå Sweden