PT - JOURNAL ARTICLE AU - Furlan, Andrea D. AU - Williamson, Owen D. TI - New Canadian guidance on opioid use for chronic pain: necessary but not sufficient AID - 10.1503/cmaj.170431 DP - 2017 May 08 TA - Canadian Medical Association Journal PG - E650--E651 VI - 189 IP - 18 4099 - http://www.cmaj.ca/content/189/18/E650.short 4100 - http://www.cmaj.ca/content/189/18/E650.full SO - CMAJ2017 May 08; 189