RT Journal Article SR Electronic T1 Canadian Primary Care Sentinel Surveillance Network JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 1219 OP 1220 VO 57 IS 10 A1 Birtwhistle, Richard V. YR 2011 UL http://www.cfp.ca/content/57/10/1219.abstract AB