1. Ontario Drug Policy Research Network. Ontario Prescription Opioid Tool. Toronto, ON; July 2018. DOI: 10.31027/ODPRN.2018.01. Available from:

2. Busse JW. The 2017 Canadian guideline for opioids for chronic non-cancer pain. Hamilton, ON: McMaster University; 2017. Available from:

3.  Ontario Agency for Health Protection and Promotion (Public Health Ontario). Interactive Opioid Tool. Toronto, ON: Queen’s Printer for Ontario; 2018. Available from:

4.  Gomes T, Greaves S, Martins D, et al. Latest Trends in Opioid-Related Deaths in Ontario: 1991 to 2015. Toronto: Ontario Drug Policy Research Network; April 2017. Available from: