RT Journal Article SR Electronic T1 Adopting global guidelines for air pollution: protecting the health of Canadians JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 788 OP 788 DO 10.1503/cmaj.150722 VO 187 IS 11 A1 Walji, Moneeza A1 Flegel, Ken YR 2015 UL http://www.cmaj.ca/content/187/11/788.abstract