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Funck-Brentano stands behind his work, “because hydroxychloroquine has serious side effects in some populations,” according to Retraction Watch.
The Lancet retraction reads in part:
A recent Lancet Article by Mandeep Mehra and colleagues, which reported adverse events associated with hydroxychloroquine or chloroquine treatment in patients with COVID-19, has been retracted by three of the authors, along with our linked Comment that provided a commentary on the Article and its findings, because the veracity of the data underlying this observational study could not be assured by the study authors.