Cockcroft, D W Airway hyperresponsiveness. Relevance of random population data to clinical usefulness. [electronic resource] - The American review of respiratory disease Sep 1990 - 497-500 p. digital Publication Type: Comment; Journal Article ISSN: 0003-0805 Standard No.: 10.1164/ajrccm/142.3.497 doi Subjects--Topical Terms: AdultAsthma--diagnosisBronchi--physiopathologyBronchial Provocation TestsChildHistamineHumansMethacholine ChlorideMethacholine CompoundsPrevalencePulmonary Ventilation