Higgs, C M Influence of knowledge of peak flow on self assessment of asthma: studies with a coded peak flow meter. [electronic resource] - Thorax Sep 1986 - 671-5 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0040-6376 Standard No.: 10.1136/thx.41.9.671 doi Subjects--Topical Terms: AdultAsthma--diagnosisFemaleHumansMaleMiddle AgedPeak Expiratory Flow Rate--instrumentationSelf-Assessment