1. Ahmad D (1984) Effects of aerosol propellants on airways function. In: Epstein SW (ed) Metered dose inhalers. Astra Pharmaceuticals Canada Ltd. pp 22–26
2. American Thoracic Society (1980) Guidelines for the use of intermittent positive pressure breathing (IPPB). Resp Care 25: 365–370
3. Andersen JB, Klausen NO (1982) A new mode of administration of nebulized bronchodilator in severe bronchospasm. Eur J Respir Dis (Suppl) 119: 97–100
4. Asmundsson T, Johnson RF, Kilbum KH, Goodrich JK (1973) Efficiency of nebulizers for depositing saline in human lung. Am Rev Respir Dis 108: 506–512
5. Auty RM, Brown K, Neale MG, Snashall PD (1987) Respiratory tract deposition of sodium cromoglycate is highly dependent upon technique of inhalation using the spinhaler. Br J Dis Chest 81: 371–380