1. Department of Oral Microbiology and Immunology; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
2. Department of Otorhinolaryngology, Head and Neck Surgery; Institute of Clinical Sciences; Sahlgrenska Academy; Sahlgrenska University Hospital; University of Gothenburg; Gothenburg Sweden
3. Department of Oral and Maxillofacial Surgery; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
4. Department of Oral Prosthetics; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden