title: Spacer devices in asthma.
authors.forename: R
authors.initials: R
authors.lastname: Buchdahl
authors.forename: S
authors.initials: S
authors.lastname: Ward
authors.forename: A
authors.initials: A
authors.lastname: Summerfield
mesh_terms: D000403:Airway Resistance; D018927:Anti-Asthmatic Agents / Q000008:administration & dosage*; D001249:Asthma / Q000188:drug therapy*; D004867:Equipment Design; D006801:Humans; D009330:Nebulizers and Vaporizers
chemical_list: D018927:Anti-Asthmatic Agents