title: Ongoing airway inflammation in patients with COPD who Do not currently smoke
authors.affiliation: Departments of Pulmonology (Drs. Rutgers, Postma, ten Hacken, van der Mark, and Koeter), Allergology (Dr. Kauffman), and Pathology (Dr. Timens), University Hospital Groningen, The Netherlands.
authors.initials: SR
authors.lastname: Rutgers
authors.initials: DS
authors.lastname: Postma
authors.lastname: ten Hacken NH
authors.initials: HF
authors.lastname: Kauffman
authors.lastname: van Der Mark TW
authors.initials: GH
authors.lastname: Koeter
authors.initials: W
authors.lastname: Timens