title: The origin of periodontal infections.
authors.forename: R J
authors.initials: RJ
authors.lastname: Genco
authors.forename: J J
authors.initials: JJ
authors.lastname: Zambon
authors.forename: L A
authors.initials: LA
authors.lastname: Christersson
mesh_terms: D006801:Humans; D009055:Mouth / Q000382:microbiology*; D010510:Periodontal Diseases / Q000209:etiology* / Q000382:microbiology