"Masking lack of evidence with politic"s
"A July 2020 review by the Oxford Centre for Evidence-Based Medince found that there is no evidence for the effectiveness of cloth masks against virus infection or transmission"
"Tom Jefferson, Carl Heneghan", 23rd July 2020
"CEBM - The Centre for Evidence-Based Medicine, Oxford University"
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https://www.cebm.net/covid-19/masking-lack-of-evidence-with-politics/