TY - JOUR T1 - We (do not) stand on guard for thee JF - Canadian Medical Association Journal JO - CMAJ SP - E99 LP - E100 DO - 10.1503/cmaj.091353 VL - 181 IS - 5 AU - Thomas L. Perry Y1 - 2009/09/01 UR - http://www.cmaj.ca/content/181/5/E99.abstract ER -