1. Controlled trial of cortisone acetate in chronic asthma;Medical Research Council;Lancet,1956
2. Controlled trial of cortisone acetate in status asthmaticus;Medical Research Council;Lancet,1956
3. Beclomethasone dipropionate: a new steroid aerosol for the treatment of allergic asthma;Morrow-Brown;BMJ,1972
4. Guidelines on the management of asthma: chronic persistent asthma;British Thoracic Society;Thorax,1993
5. International consensus report on the diagnosis and management of asthma;Clin Exp Allergy,1992