RT Journal Article SR Electronic T1 Nothing to sneeze at JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1239 OP E1240 DO 10.1503/cmaj.109-4015 VO 183 IS 17 A1 David Manly YR 2011 UL http://www.cmaj.ca/content/183/17/E1239.abstract