Weiss KB, Gergen PJ, Hodgson TA: An economic evaluation of asthma in the United States. N Engl J Med326:862-866,1992
2.
Expert Panel Report: Guidelines for the diagnosis and treatment of asthma. National Institutes of Health , Publication No. 91-3042 (August) 1991, Bethesda, MD 20892
3.
Tsiu SJ, Self TH, Burns R.: Theophylline toxicity: Update. Ann Allergy64:241-257,1990
4.
Schiff GD, Hegde HK, LaCloche L., et al: Inpatient theophylline toxicity: Preventable factors. Ann Intern Med114:748-753,1991
5.
Lam A., Newhouse MT: Management of asthma and chronic airflow limitation: Are methylxanthines obsolete?Chest98:44-52, 1990
6.
Self TH, Rumbak MJ, Kelso TM, et al: Reassessment of the role of theophylline in the current therapy for nocturnal asthma. J Am Board Fam Pract5:281-288, 1992