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Enlace: http://whyfiles.org/042asthma/

Descripción: University of Wisconsin, Board of Regents.
«Asthma -- a narrowing of airways in the lungs that causes coughing, wheezing and gasping for breath -- has probably been around since cave dwellers slept on furs coated with dust mites and cockroach crud. But why is it on a rampage today when, ironically, we know more than ever about its causes and treatment?»