What we really need is an RCT on the effectiveness of N95s against COVID.
Oh wait! https://www.acpjournals.org/doi/10.7326/m20-6817
Oh wait!
https://www.acpjournals.org/doi/10.7326/m20-6817
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What we really need is an RCT on the effectiveness of N95s against COVID.
Oh wait!
https://www.acpjournals.org/doi/10.7326/m20-6817