title: Variation in nebulizer output and weight output from Mefar dosimeter: implications for multicentre studies.
authors.forename: R J
authors.initials: RJ
authors.lastname: Ward
authors.forename: D W
authors.initials: DW
authors.lastname: Reid
authors.forename: E H
authors.initials: EH
authors.lastname: Walters
mesh_terms: D000336:Aerosols; D001249:Asthma / Q000175:diagnosis; D001985:Bronchial Provocation Tests / Q000295:instrumentation*; D016085:Bronchoconstrictor Agents / Q000008:administration & dosage; D002138:Calibration; D003257:Consumer Product Safety; D006801:Humans; D016210:Methacholine Chloride / Q000008:administration & dosage; D015337:Multicenter Studies as Topic; D009330:Nebulizers and Vaporizers / Q000592:standards*
chemical_list: D000336:Aerosols; D016085:Bronchoconstrictor Agents; D016210:Methacholine Chloride