title: Sensitivity of methacholine testing in occupational asthma.
mesh_terms: D001249:Asthma / Q000175:diagnosis*; D006801:Humans; D016210:Methacholine Chloride; D008688:Methacholine Compounds; D009784:Occupational Diseases / Q000175:diagnosis*
chemical_list: D008688:Methacholine Compounds; D016210:Methacholine Chloride