Please act as a scientist and provide me with a 50-word summary of the main findings in one of these two articles:
https://www.nature.com/articles/s41586-023-06016-5
https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1004207 There should be exactly 4 paragraphs separated by the markdown divider: ***.
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