title: Author's response.
authors.forename: Patricia
authors.initials: P
authors.lastname: Davidson
mesh_terms: D001419:Bacteria / Q000254:growth & development*; D005260:Female; D006801:Humans; D008297:Male; D009055:Mouth / Q000382:microbiology*; D009910:Oral Hygiene; D053717:Pneumonia, Ventilator-Associated / Q000517:prevention & control*; D012121:Respiration, Artificial