1. National Asthma Education and Prevention Program Expert Panel. Clinical practice guidelines. Expert Panel report 2: guidelines for the diagnosis and management of asthma. Publication No. 97–4051;National Institutes of Health/National Heart, Lung, and Blood Institute,1997
2. Asthma control versus asthma severity;Cockcroft;J Allergy Clin Immunol,1996
3. Differential diagnosis of adult asthma;Tilles;Immunol Allergy Clin North Am,1996
4. Asthma diagnosis and differential diagnosis;Tilles,2003
5. Pathophysiology and physiologic assessment of the asthmatic patient;Irvin;Semin Respir Med,1987