RT Journal Article SR Electronic T1 Influenza vaccination of health care workers JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 151 OP 151 DO 10.1503/cmaj.113-2098 VO 185 IS 2 A1 Ken Flegel YR 2013 UL http://www.cmaj.ca/content/185/2/151.1.abstract