RT Journal Article SR Electronic T1 Diagnosis of asthma in adults JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association DO 10.1503/cmaj.080006 A1 Alan G Kaplan A1 Meyer S Balter A1 Alan D Bell A1 Harold Kim A1 R Andrew McIvor YR 2009 UL http://www.cmaj.ca/content/early/2009/09/29/cmaj.080006.abstract AB