1. Beta-adrenergic bronchodilators;Nelson;N Engl J Med,1995
2. Beta-adrenergic agonists for acute, severe asthma;Kelly;Ann Pharmacother,1992
3. 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
4. Inhibition of exercise-induced asthma by different pharmacological pathways;Godfrey;Thorax,1976
5. Expert Panel Report 2: Guidelines for the Diagnosis and Management of Asthma;National Asthma Education and Prevention Program,1997