TY - JOUR T1 - Physicians and advocacy JF - Canadian Medical Association Journal JO - CMAJ SP - 1413 LP - 1413 DO - 10.1503/cmaj.050521 VL - 172 IS - 11 A2 - , Y1 - 2005/05/24 UR - http://www.cmaj.ca/content/172/11/1413.abstract ER -