title: Exhaled nitric oxide and induced sputum analysis as markers of airway inflammation in subjects with COPD
authors.affiliation: National Jewish Medical and Research Center, University of Colorado Health Sciences Center, Denver, CO.
authors.initials: PE
authors.lastname: Silkoff
authors.initials: D
authors.lastname: Martin
authors.initials: J
authors.lastname: Pak
authors.initials: RJ
authors.lastname: Martin