Personal protective effect of wearing surgical face masks in public spaces on self-reported respiratory symptoms in adults: pragmatic randomised superiority trial

Solberg, Runar Barstad ; Fretheim, Atle ; Elgersma, Ingeborg Hess ; Fagernes, Mette ; Iversen, Bjørn Gunnar ; Hemkens, Lars G ; Rose, Christopher James ; Elstrøm, Petter

BMJ (Online), 2024-07, Vol.386, p.e078918 [Periódico revisado por pares]

London: British Medical Journal Publishing Group

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