Use of medical face masks versus particulate respirators as a component of personal protective equipment for health care workers in the context of the COVID-19 pandemic. - Conly, John; Seto, W. H.; Pittet, Didier; Holmes, Alison; Chu, May; Hunter, Paul R.; on behalf of the WHO Infection Prevention and Control Expert Group for COVID-19; Cookson, Barry; Voss, Andreas; Levin, Anna Sara Shafferman; Seto, Wing Hong; Kalisvar, Marimuthu; et al. (Antimicrobial Resistance & Infection Control, 2020)