Attacking asthma with a new test

November 17, 2011 12:35:19 AM PST
Coughing, wheezing and shortness of breath. 24 million Americans experience these symptoms when asthma attacks. The chronic respiratory disease is obvious in some, but other patients suffer a long time, while doctors struggle to figure out their problem. Now a new test is helping undiagnosed asthmatics breathe a lot easier.

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