Patel, Alopi, Joseph Kim, Darryl Brown, Hung-Mo Lin, Yuxia Ouyang, and Paul Shekane. “Chronic Opioid Use and Mortality Outcomes in Patients Admitted With COVID-19: A Retrospective Cohort Study”. Journal of Opioid Management 19, no. 4 (August 11, 2023): 321–327. Accessed May 14, 2024. https://wmpllc.org/ojs/index.php/jom/article/view/3479.