Trial of cromoglycate and slow-release aminophylline in perennial childhood asthma.Br Med J (Clin Res Ed) 1981; 282 doi: http://dx.doi.org/10.1136/bmj.282.6279.1874-d (Published 06 June 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:1874
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