DOI:
10.1055/s-00000137
Krankenhaushygiene up2date
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References
Cheng KK, Lam TH, Leung CC.
Wearing face masks in the community during the COVID-19 pandemic: altruism and solidarity.
Lancet 2020; 395
DOI: 10.1016/S0140-6736(20)30918-1.
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