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BMJ. 2001 Feb 10;322(7282):355-7.

Contamination in trials: is cluster randomisation the answer?

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  • 1Centre for Health Economics, University of York, York YO10 5DD. djt6@york.ac.uk
PMID:
11159665
[PubMed - indexed for MEDLINE]
PMCID:
PMC1119583
Free PMC Article
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