Trends in chronic obstructive pulmonary disease prevalence, incidence, and mortality in ontario, Canada, 1996 to 2007: a population-based study.
Arch Intern Med. 2010 Mar 22;170(6):560-5. doi: 10.1001/archinternmed.2010.17.
Arch Intern Med. 2010.
PMID: 20308643