RT Journal Article SR Electronic T1 Using a family history tool to prevent chronic diseases JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 631 OP 631 DO 10.1503/cmaj.045260 VO 172 IS 5 A1 Erica Weir YR 2005 UL http://www.cmaj.ca/content/172/5/631.abstract