1. Audit of nebuliser use;Williams, P.A.; Renowden, S.A.; Ward, M.J.;Postgrad Med J,1985
2. Clinical trials in acute asthma. Are type II errors important?;Ward, M.J.;Thorax,1986
3. Aminophylline treatment in severe acute asthma. A meta-analysis;Littenberg, B.;JAMA,1988
4. Effect of adding aminophylline infusion to nebulised salbutamol in severe acute asthma;Zainudid, B.M.Z.; Ismail, O.; Yusoff, K.;Thorax,1994
5. Aminophylline increases the toxicity but not the efficacy of an inhaled beta adrenergic agonist in the treatment of acute exacerbations of asthma;Siegel, D.; Sheppard, D.; Gelb, A.; Weinberg, P.F.;Am Rev Respir Dis,1985