RT Journal Article SR Electronic T1 Clarification from the College of Physicians and Surgeons of BC on commentary about limitations of the CDC guideline for prescribing opioids JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E508 OP E508 DO 10.1503/cmaj.732899 VO 189 IS 13 A1 H.M. Oetter YR 2017 UL http://www.cmaj.ca/content/189/13/E508.abstract AB