Cockcroft, D W Methacholine challenge: test-shortening procedures. [electronic resource] - Chest Dec 2001 - 1857-60 p. digital Publication Type: Comparative Study; Evaluation Study; Journal Article ISSN: 0012-3692 Standard No.: 10.1378/chest.120.6.1857 doi Subjects--Topical Terms: AdolescentAdultAgedAsthma--diagnosisBronchial Provocation Tests--methodsChildDose-Response Relationship, DrugDrug Administration ScheduleFemaleHumansMaleMethacholine ChlorideMiddle AgedPredictive Value of Tests