title: Are six seconds long enough?
authors.forename: Paul L
authors.initials: PL
authors.lastname: Enright
mesh_terms: D001249:Asthma / Q000175:diagnosis; D005541:Forced Expiratory Volume; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis; D012907:Smoking; D013147:Spirometry / Q000295:instrumentation / Q000379:methods*; D013997:Time Factors