Smith V, Clarke M, Devane D, Begley C, Shorter G, Maguire L (2013)

SWAT 1: what effects do site visits by the principal investigator have on recruitment in a multicentre randomized trial? Journal of Evidence-Based Medicine 6(3), 136-137
Introduction to the Study Within a Trial (SWAT) programme, to encourage the embedding of methodology research studies in randomised trials.

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