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Recomendaciones sobre el uso de mascarillas en el contexto de la COVID-19: orientaciones provisionales, 6 de abril de 2020
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Organización Mundial de la Salud OMS (2020) C_WHO
Source:  https://apps.who.int/iris/bitstream/handle/10665/331789/WHO-2019-nCoV-IPC_Masks-2020.3-spa.pdf?sequence=1&isAllowed=y

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