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4. Aminophylline increases the toxicity but not the efficacy of an inhaled beta-adrenergic agonist in the treatment of acute exacerbations of asthma;Siegel;Am Rev Respir Dis,1985
5. Efficacy of emergency room treatment of bronchial asthma: the role of intravenous aminophylline;Clynes;Am Rev Respir Dis,1987