title: Discrepancy between standard and low range mini Wright peak flow meters.
authors.forename: T P
authors.initials: TP
authors.lastname: Usherwood
authors.forename: J H
authors.initials: JH
authors.lastname: Barber
mesh_terms: D005540:Forced Expiratory Flow Rates / Q000295:instrumentation*; D006801:Humans; D010366:Peak Expiratory Flow Rate / Q000295:instrumentation*