DOI:
10.1055/s-00000137
Krankenhaushygiene up2date
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References
European Centre for Disease Prevention and Control (ECDC).
Using face masks in the community (8. April 2020).
https://www.ecdc.europa.eu/sites/default/files/documents/COVID-19-use-face-masks-community.pdf (Stand: 07.07.2020)
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