RT Journal Article SR Electronic T1 Lest we forget: why the use of chemical weapons must not go unchallenged JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1299 OP 1299 DO 10.1503/cmaj.131359 VO 185 IS 15 A1 Patrick, Kirsten A1 Stanbrook, Matthew A1 Flegel, Ken YR 2013 UL http://www.cmaj.ca/content/185/15/1299.abstract AB