RT Journal Article SR Electronic T1 Response to: “Some patients with chronic pain need low-dose opioid therapy for survival and quality of life” JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E627 OP E627 DO 10.1503/cmaj.69173 VO 190 IS 20 A1 Helene Bertrand YR 2018 UL http://www.cmaj.ca/content/190/20/E627.abstract AB