TY - JOUR T1 - Canadian Primary Care Sentinel Surveillance Network JF - Canadian Family Physician JO - Can Fam Physician SP - 1219 LP - 1220 VL - 57 IS - 10 AU - Richard V. Birtwhistle Y1 - 2011/10/01 UR - http://www.cfp.ca/content/57/10/1219.abstract N2 - ER -