1. National Asthma Education and Prevention Program Expert Panel Report 3 (EPR-3): Guidelines for the Diagnosis and Management of Asthma, Full Report 2007 Bethesda, MD U.S. Department of Health and Human Services, National Institutes of Health, National Heart, Lung, and Blood Institute 2007
2. U.S. Department of Health and Human Services, National Institutes of Health, National Heart, Lung, and Blood Institute Asthma Care Quick Reference: Diagnosing and Managing Asthma 2012 http://www.nhlbi.nih.gov/health-pro/guidelines/current/asthma-guidelines/quick-reference
3. Perception of respiratory sensation assessed by means of histamine challenge and threshold loading tests;Bijl-Hofland;Chest,2000
4. Chemosensitivity and perception of dyspnea in patients with a history of near-fatal asthma;Kikuchi;N Engl J Med,1994
5. Factors associated with hospital admissions and repeat emergency department visits for adults with asthma;Adams;Thorax,2000