May 19, 2006Open Access
Factors That Can Affect the External Validity of Randomised Controlled Trials
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Resumen
Citation: Rothwell, P. M. (2006). 'Factors that can affect the external validity of randomised controlled trials' PLoS Clinical Trials, 1(1): e9. Available at http://clinicaltrials.ploshubs.org. 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 credited.
Cite This Study
Peter M. Rothwell (Fri,) studied this question.