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IP address: 3.85.215.164
Time: 2024-03-29T11:18:42Z
URL: http://scholar.google.com/scholar_lookup?title=Small-airway+obstruction+and+emphysema+in+chronic+obstructive+pulmonary+disease&year=2011&author=McDonough&journal=N+Engl+J+Med&volume=365&issue=17&pages=1567-1575&doi=10.1056%2FNEJMoa1106955&pmid=22029978