RT Journal Article SR Electronic T1 We (do not) stand on guard for thee JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E99 OP E100 DO 10.1503/cmaj.091353 VO 181 IS 5 A1 Perry, Thomas L. YR 2009 UL http://www.cmaj.ca/content/181/5/E99.abstract