https://www.bmj.com/content/bmj/369/bmj.m1435.full.pdf
Finally an article arguing that the precautionary principle should be applied to mask wearing guidance for the public
Time to get creative over the Easter weekend :)
My scrap cloth is actually too thin to be useful...maybe tissues or a vacuum filter (yeah those work reasonably well) will do.
@JWestland started
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https://www.bmj.com/content/bmj/369/bmj.m1435.full.pdf
Finally an article arguing that the precautionary principle should be applied to mask wearing guidance for the public