title: Surgical masks vs N95 respirators for preventing influenza.
authors.forename: Ted E
authors.initials: TE
authors.lastname: Palen
authors.forename: Kate G
authors.initials: KG
authors.lastname: Felix
mesh_terms: D003365:Costs and Cost Analysis; D006801:Humans; D017758:Infectious Disease Transmission, Patient-to-Professional / Q000517:prevention & control*; D007251:Influenza, Human / Q000517:prevention & control* / Q000635:transmission; D008397:Masks / Q000191:economics; D009726:Nurses; D015203:Reproducibility of Results; D012134:Respiratory Protective Devices / Q000191:economics