%0 Journal Article %A Lauren Vogel %T Pharma freebies for doctors linked to opioidprescribing habits %D 2019 %R 10.1503/cmaj.109-5713 %J Canadian Medical Association Journal %P E202-E202 %V 191 %N 7 %U https://www.cmaj.ca/content/cmaj/191/7/E202.full.pdf