TY - JOUR T1 - A short history of pain management JF - Canadian Medical Association Journal JO - CMAJ SP - E26 LP - E27 DO - 10.1503/cmaj.109-5523 VL - 190 IS - 1 AU - Roger Collier Y1 - 2018/01/08 UR - http://www.cmaj.ca/content/190/1/E26.abstract N2 - ER -