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Protective effect of mandatory face masks in the public—relevant variables with likely impact on outcome were not considered
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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National Academy of Sciences
2020
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7959498/ https://www.ncbi.nlm.nih.gov/pubmed/33051301 http://dx.doi.org/10.1073/pnas.2012415117 |