TY - JOUR T1 - Clinical guideline writers often conflicted JF - Canadian Medical Association Journal JO - CMAJ SP - E139 LP - E140 DO - 10.1503/cmaj.109-3757 VL - 183 IS - 3 AU - Roger Collier Y1 - 2011/02/22 UR - http://www.cmaj.ca/content/183/3/E139.abstract ER -