| http://www.w3.org/ns/prov#value | - This common practice represents the difficulty in distinguishing these disorders clinically, particularly in patients with a history that does not easily differentiate asthma from COPD. A common clinical scenario is an older former smoker with partially reversible or fixed airflow obstruction and evidence of atopy, demonstrating ???overlap??? features of asthma and COPD. We stress that asthma-COPD
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