Cite
MLA Citation
Christopher T Rentsch et al.. “Effect of pre-exposure use of hydroxychloroquine on COVID-19 mortality: a population-based cohort study in patients with rheumatoid arthritis or systemic lupus erythematosus using the OpenSAFELY platform.” Lancet, vol. 3, 2021, pp. e19–e27. http://access.bl.uk/ark:/81055/vdc_100117934007.0x000001