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PMC ID:: 2665333

PubMed ID:: 9451271

DOI:: 10.1136/bmj.316.7124.54

ScienceOpen disciplines: Chemistry

Keywords: Cluster Analysis,Randomized Controlled Trials as Topic

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ScienceOpen disciplines: Chemistry

Keywords: Cluster Analysis, Randomized Controlled Trials as Topic

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Analysis of a trial randomised in clusters.

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