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Risk of severe life threatening asthma and beta agonist type: an example of confounding by severity.
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    Garrett JE, Lanes SF, Kolbe J, et al
    Risk of severe life threatening asthma and beta agonist type: an example of confounding by severity.

    Publication history

    • First published November 1, 1996.
    Online issue publication 
    November 01, 1996

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