%0 Journal Article %B BMJ %D 2018 %G eng %P k2833 %R 10.1136/bmj.k2833 %T Trends in opioid use in commercially insured and Medicare Advantage populations in 2007-16: retrospective cohort study. %V 362 %1 https://www.ncbi.nlm.nih.gov/pubmed/30068513 %8 12/2018