Patel, A., Kim, J., Brown, D., Lin, H.-M., Ouyang, Y. and Shekane, P. 2023. Chronic opioid use and mortality outcomes in patients admitted with COVID-19: A retrospective cohort study. Journal of Opioid Management. 19, 4 (Aug. 2023), 321–327. DOI:https://doi.org/10.5055/jom.2023.0789.