RT Journal Article SR Electronic T1 Missing determinant of vaccination concordance JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 151 OP 151 DO 10.1503/cmaj.113-2099 VO 185 IS 2 A1 Albert J. Schumacher YR 2013 UL http://www.cmaj.ca/content/185/2/151.2.abstract