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Asthma in the United States: burden and current theories.
Asthma has emerged as a major public health problem in the United States over the past 20 years. Currently, nearly 15 million Americans have asthma, including almost 5 million children. The number of asthma cases has more than doubled since 1980. Approximately 5,500 persons die from asthma each year...
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
2002
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1241205/ https://www.ncbi.nlm.nih.gov/pubmed/12194886 |