title: Comparison of spirometric thresholds in diagnosing smoking-related airflow obstruction: authors' response.
authors.affiliation: Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.
authors.forename: Surya P
authors.initials: SP
authors.lastname: Bhatt
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
authors.forename: George R
authors.initials: GR
authors.lastname: Washko
authors.affiliation: Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.
authors.forename: Mark T
authors.initials: MT
authors.lastname: Dransfield
authors.affiliation: Department of Radiology, University of Iowa, Iowa City, Iowa, USA.
authors.forename: Jessica C
authors.initials: JC
authors.lastname: Sieren
authors.affiliation: Department of Radiology, University of Iowa, Iowa City, Iowa, USA.
authors.forename: John D
authors.initials: JD
authors.lastname: Newell
authors.affiliation: Department of Radiology, University of Iowa, Iowa City, Iowa, USA.
authors.forename: Eric A
authors.initials: EA
authors.lastname: Hoffman
mesh_terms: D000402:Airway Obstruction / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D011656:Pulmonary Emphysema / Q000175:diagnosis*; D012907:Smoking / Q000009:adverse effects*; D013147:Spirometry / Q000379:methods*
keywords: COPD epidemiology