TY - JOUR T1 - Ups and downs of evidence and practice guidelines JF - Canadian Family Physician JO - Can Fam Physician SP - 1143 LP - 1143 VL - 59 IS - 11 AU - Roger Ladouceur Y1 - 2013/11/01 UR - http://www.cfp.ca/content/59/11/1143.abstract N2 - ER -