RT Journal Article SR Electronic T1 Climate change is a health issue JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 587 OP 587 DO 10.1503/cmaj.113-2114 VO 185 IS 7 A1 Courtney Howard YR 2013 UL http://www.cmaj.ca/content/185/7/587.2.abstract AB