PT - JOURNAL ARTICLE AU - Roger Chou TI - What we still don’t know about treating chronic noncancer pain with opioids AID - 10.1503/cmaj.100548 DP - 2010 Jun 15 TA - Canadian Medical Association Journal PG - 881--882 VI - 182 IP - 9 4099 - http://www.cmaj.ca/content/182/9/881.short 4100 - http://www.cmaj.ca/content/182/9/881.full SO - CMAJ2010 Jun 15; 182