Depression in chronic pain: might opioids be responsible?

aUniversity of Toronto Medical School, Toronto, ON, Canada bUniversity of Washington, Seattle, WA, United States Departments of cMedicine dPediatrics, and eHealth Policy, University of Toronto, Toronto, ON, Canada *Corresponding author. Address: Sunnybrook Health Sciences Centre, 075 Bayview Ave G106, Toronto, ON M4N 3M5, Canada. Tel.: (416) 480-6100; fax: (416) 480-6084. E-mail address: [email protected] (D.N. Juurlink). Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.