Clearing the Air: Asthma and Indoor Air Exposures (2000)
Air Pollution and Respiratory Health Branch, Centers for Disease Control and Prevention
New York City Department of Health Asthma Initiative
From CNN.COM: As asthma cases rise, New York's neighborhoods especially hard hit
American Lung Association: Asthma
The Allergy and Asthma Network · Mothers of Asthmatics, Inc.
American Academy of Allergy, Asthma and Immunology
Mailman School of Public Health, Columbia University