RT Journal Article SR Electronic T1 Spirometry in primary care practices JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 429 OP 430 DO 10.1503/cmaj.1080129 VO 180 IS 4 A1 Anthony D'Urzo, MD MSc YR 2009 UL http://www.cmaj.ca/content/180/4/429.2.abstract