title: The best protection.
authors.forename: John H
authors.initials: JH
authors.lastname: Lange
mesh_terms: D006801:Humans; D008397:Masks / Q000592:standards; D012134:Respiratory Protective Devices / Q000592:standards*; D045169:Severe Acute Respiratory Syndrome / Q000517:prevention & control* / Q000635:transmission*