%0 Journal Article %K epidemiology %K Health services %K Healthcare Disparities %K Primary health care %K Pulmonary disease, chronic obstructive %K Substance-related disorders %B BMJ Med %D 2022 %G eng %M 36568709 %P e000215 %R 10.1136/bmjmed-2022-000215 %T Burden and treatment of chronic obstructive pulmonary disease among people using illicit opioids: matched cohort study in England %V 1 %2 PMC9770021 %7 2022/12/27 %@ 2754-0413