External validity of randomised controlled trials in asthma: to whom do the results of the trials apply? | Thorax

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Asthma

External validity of randomised controlled trials in asthma: to whom do the results of the trials apply?

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Cite this article as:: Travers J, Marsh S, Williams M, et al

External validity of randomised controlled trials in asthma: to whom do the results of the trials apply?

Thorax 2007;62:219-223.