- 1 名前：ばーど ★ mailto:age [2020/04/02(Thu) 19:43:57 ID:/hTEosis9.net]
- https://www.who.int/docs/default-source/documents/advice-on-the-use-of-masks-2019-ncov.pdf
Cloth (e.g. cotton or gauze) masks are not recommended
under any circumstance.
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★1が立った時間 2020/04/02(木) 09:20:52.41
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