RT Journal Article SR Electronic T1 The role of seroepidemiology in the comprehensive surveillance of vaccine-preventable diseases JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E70 OP E76 DO 10.1503/cmaj.110506 VO 184 IS 1 A1 Wilson, Sarah E. A1 Deeks, Shelley L. A1 Hatchette, Todd F. A1 Crowcroft, Natasha S. YR 2012 UL http://www.cmaj.ca/content/184/1/E70.abstract