Aide memoire: use of medical and non-medical/fabric masks for community outreach activities during the COVID-19 pandemic, based on current WHO guidance, 31 May 2021
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World Health Organization
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5 p.
The Portuguese version is published by PAHO: https://iris.paho.org/handle/10665.2/54547
The Portuguese version is published by PAHO: https://iris.paho.org/handle/10665.2/54547