How Effective Are Cloth Face Masks? More than a century after the 1918 influenza pandemic, claims of the masks' effectiveness continue to lack a firm foundation.
| Autor: | LIU, IAN T. T.1, PRASAD, VINAY2, DARROW, JONATHAN J.3 |
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| Zdroj: | Regulation. Winter2021/2022, Vol. 44 Issue 4, p32-36. 5p. |
| Databáze: | Business Source Ultimate |
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