RT Journal Article SR Electronic T1 Guideline for opioid therapy and chronic noncancer pain JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E659 OP E666 DO 10.1503/cmaj.170363 VO 189 IS 18 A1 Jason W. Busse A1 Samantha Craigie A1 David N. Juurlink A1 D. Norman Buckley A1 Li Wang A1 Rachel J. Couban A1 Thomas Agoritsas A1 Elie A. Akl A1 Alonso Carrasco-Labra A1 Lynn Cooper A1 Chris Cull A1 Bruno R. da Costa A1 Joseph W. Frank A1 Gus Grant A1 Alfonso Iorio A1 Navindra Persaud A1 Sol Stern A1 Peter Tugwell A1 Per Olav Vandvik A1 Gordon H. Guyatt YR 2017 UL http://www.cmaj.ca/content/189/18/E659.abstract