1. Inhaled glucocorticoids for asthma;Barnes;N Engl J Med,1995
2. Beclomethasone dipropionate versus budesonide inhalation suspension in children with mild to moderate persistent asthma;Terzano;Eur Rev Med Pharmacol Sci,2000
3. Inhalation therapy: Problems and prospects;Berglund;Eur Respir J,1990
4. Errors in inhalation technique and efficacy in inhaler use in asthmatic children;Pedersen;Allergy,1986