Article
Severe asthma: epidemiology, burden of illness, and heterogeneity.
Allergy and asthma proceedings - 1 Jan 2000
Lang David M
Abstract excerpt
BACKGROUND: Patients with severe persistent asthma comprise only 5-10 % of the total asthma population, but account for a large proportion of asthma morbidity and health care expenditures. Among patients with severe asthma, higher costs can be expected in association with not well or poorly controlled asthma. OBJECTIVE: To summarize the evidence concerning the epidemiology, burden, and heterogeneity of severe...
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