1. Methylxanthines in 1989;Rossing;Ann Intern Med,1989
2. 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
3. State of the art: anticholinergic, antimuscarinic bronchodilators;Gross;Am Rev Respir Dis,1984
4. Snowbird workshop on standardization of spirometry;American Thoracic Society;Am Rev Respir Dis,1979
5. Statistics for psychology;Mendenhall,1977