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Randomization by cluster. Sample size requirements and analysis.

作者信息

Donner A, Birkett N, Buck C

出版信息

Am J Epidemiol. 1981 Dec;114(6):906-14. doi: 10.1093/oxfordjournals.aje.a113261.

DOI:10.1093/oxfordjournals.aje.a113261
PMID:7315838
Abstract
摘要

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