title: Usefulness and safety of pharmacologic bronchoprovocation challenge in evaluating patients with normal spirometric tests who are suspected of having asthma.
authors.affiliation: Pulmonary and Critical Care Division, University of Massachusetts Medical School, Worcester.
authors.forename: M R
authors.initials: MR
authors.lastname: Pratter
authors.forename: R S
authors.initials: RS
authors.lastname: Irwin
mesh_terms: D001249:Asthma / Q000175:diagnosis*; D001985:Bronchial Provocation Tests; D001986:Bronchial Spasm / Q000175:diagnosis; D006632:Histamine; D006801:Humans; D016210:Methacholine Chloride; D008688:Methacholine Compounds; D013147:Spirometry
chemical_list: D008688:Methacholine Compounds; D016210:Methacholine Chloride; D006632:Histamine