title: Authors' response to Walker et al.
authors.affiliation: David Geffen School of Medicine at University of California Los Angeles, , Los Angeles, California, USA.
authors.forename: D P
authors.initials: DP
authors.lastname: Tashkin
authors.forename: N
authors.initials: N
authors.lastname: Metzdorf
authors.forename: C
authors.initials: C
authors.lastname: Hallmann
authors.forename: I
authors.initials: I
authors.lastname: Leimer
authors.forename: T
authors.initials: T
authors.lastname: Lee
authors.forename: M
authors.initials: M
authors.lastname: Decramer
mesh_terms: D005541:Forced Expiratory Volume / Q000187:drug effects*; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D012602:Scopolamine Derivatives / Q000008:administration & dosage*
chemical_list: D012602:Scopolamine Derivatives
keywords: COPD Exacerbations