Patel, A., Kim, J., Brown, D., Lin, H.-M., Ouyang, Y., & 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), 321–327. https://doi.org/10.5055/jom.2023.0789