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10/11 Late treatment study
Sili et al., medRxiv, doi:10.1101/2020.10.09.20209775 (Preprint) (not included in the study count)
Factors associated with progression to critical illness in 28 days among COVID-19 patients: results from a tertiary care hospital in Istanbul, Turkey
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Analysis of hospitalized patients in Turkey showing HCQ was given to 99.2% of patients and the incidence of critical illness was lower than most studies. Authors note "whether HCQ administration lowered the rates of critical illness development is beyond the scope of this study." There is no comparison with a control group.

Sili et al., 10/11/2020, Turkey, Middle East, preprint, 21 authors.
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