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The use of LPV/r was compared with control groups using standard of care or adjuvant therapies without LPV/r. Heterogeneity was quantified using I2 statistics. MD < 0 indicates beneficial treatment effects of LPV/r compared with the control groups.
HCQ: Hydroxychloroquine; LPV/r: Lopinavir–ritonavir; MD: Mean difference.
