Drake, T., Fairfield, C., Pius, R., Knight, S., Norman, L., Girvan, M., Hardwick, H., Docherty, A., Thwaites, R., Openshaw, P., Baillie, J., Harrison, E., Semple, M. & ISARIC4C Investigators 2021, 'Non-steroidal anti-inflammatory drug use and outcomes of COVID-19 in the ISARIC Clinical Characterisation Protocol UK cohort:a matched, prospective cohort study', The Lancet Rheumatology, 3(7), pp. E498-E506. https://doi.org/10.1016/S2665-9913(21)00104-1