title: Prospects and challenges: inhalation delivery systems.
authors: Ralph
authors: R
authors: Niven
mesh_terms: D000280:Administration, Inhalation; D016503:Drug Delivery Systems; D004867:Equipment Design; D006801:Humans; D055118:Medication Adherence; D009330:Nebulizers and Vaporizers; D004364:Pharmaceutical Preparations / Q000008:administration & dosage*
chemical_list: D004364:Pharmaceutical Preparations