Correspondence to Dr L M Castell, Green Templeton College, University of Oxford, Oxford OX2 6HG, UK; lindy.castell{at}nda.ox.ac.uk If you wish to reuse any or all of ...
Eligibility criteria We searched four databases (PubMed, Embase, SPORTDiscus and Web of Science) for randomised controlled trials, published until December 2019, examining the effect of β2-agonists on ...
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