title: Spacers   and   holding   chambers:   Not the last word, we hope--a reply.
authors.forename: H J
authors.initials: HJ
authors.lastname: Zar
authors.forename: M
authors.initials: M
authors.lastname: Mann
authors.forename: E G
authors.initials: EG
authors.lastname: Weinberg
mesh_terms: D000280:Administration, Inhalation; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D002648:Child; D016503:Drug Delivery Systems; D006801:Humans; D009330:Nebulizers and Vaporizers; D012107:Research Design; D016896:Treatment Outcome
chemical_list: D000336:Aerosols