Abstract
Copyright:© 2006 Peter M. Rothwell. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
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APA
Rothwell, P. M. (2006). Factors That Can Affect the External Validity of Randomised Controlled Trials. PLoS Clinical Trials, 1(1), e9. https://doi.org/10.1371/journal.pctr.0010009
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