title: Respirators versus medical masks: evidence accumulates but the jury remains out.
authors.forename: Ben
authors.initials: B
authors.lastname: Killingley
mesh_terms: D006801:Humans; D017053:Infection Control / Q000295:instrumentation* / Q000379:methods; D008397:Masks / Q000706:statistics & numerical data*; D016273:Occupational Exposure / Q000517:prevention & control*; D010564:Personnel, Hospital / Q000706:statistics & numerical data; D012134:Respiratory Protective Devices / Q000706:statistics & numerical data*; D012141:Respiratory Tract Infections / Q000517:prevention & control*