1. Section of Periodontology; School of Dentistry; Faculty of Health Science; University of Copenhagen; Copenhagen Denmark
2. Department of International Health; Immunology & Microbiology; University of Copenhagen; Copenhagen Denmark
3. Department of Infectious Diseases and Rheumatology; Institute for Inflammation Research; Copenhagen University Hospital Rigshospitalet; Copenhagen Denmark
4. Department of Medical Microbiology; Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark
5. Section of Cariology; School of Dentistry; Faculty of Health Science; University of Copenhagen; Copenhagen Denmark
6. Department of Biological Sciences; Wellesley College; Wellesley MA USA
7. Department of Microbiology; The Forsyth Institute; Cambridge MA USA
8. Department of Oral Medicine; Infection & Immunity; Harvard School of Dental Medicine; Boston MA USA