Controlled trial of cromoglycate and slow-release aminophylline in childhood asthma.Br Med J (Clin Res Ed) 1981; 282 doi: https://doi.org/10.1136/bmj.282.6257.74-a (Published 03 January 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:74
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