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" Patients who received one of the treatments of interest within 48 h of diagnosis were included in one of four treatment groups (chloroquine alone, chloroquine with a macrolide, hydroxychloroquine alone, or hydroxychloroquine with a macrolide), and patients who received none of these treatments formed the control group "
Et les patients qui ne reçoivent aucun de ces traitements forment le groupe de contrôle.
The Lancet

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