Found it: Cochrane, not Columbia.
"These studies were reviewed and updated by Cochrane researchers in a [300-page paper published in late January 2023](https://www.cochrane.org/CD006207/ARI_do-physical-measures-such-hand-washing-or-wearing-masks-stop-or-slow-down-spread-respiratory-viruseshttps://www.cochrane.org/CD006207/ARI_do-physical-measures-such-hand-washing-or-wearing-masks-stop-or-slow-down-spread-respiratory-viruses). To those who are not familiar with this organization, Cochrane is an international network of collaborators whose mission is to analyze and summarize the best evidence from biomedical research, without interference from commercial and financial interests, and is the leading global advocate for evidence-based health care. Cochrane reviews are internationally recognized as the benchmark for high-quality information."
Source: [Cochrane Ends the Masking Rage](https://brownstone.org/articles/cochrane-ends-the-masking-rage/) - Brownstone
#liberty #truth