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Controversial COVID study that promoted unproven treatment retracted after four-year saga

Paper on hydroxychloroquine led by French researcher Didier Raoult is second-most-cited study ever to be withdrawn.
By
  1. Richard Van Noorden

A study that stoked enthusiasm for the now-disproven idea that a cheap malaria drug can treat COVID-19 has been retracted — more than four-and-a-half years after it was published1.

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doi: https://doi.org/10.1038/d41586-024-04014-9

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