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. 1997 Jun 28;314(7098):1874. doi: 10.1136/bmj.314.7098.1874
Statistics notes. Units of analysis.
D G Altman
1, J M Bland
1
D G Altman
1Centre for Statistics in Medicine, Institute of Health Sciences, Oxford.
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J M Bland
1Centre for Statistics in Medicine, Institute of Health Sciences, Oxford.
Find articles by J M Bland
1Centre for Statistics in Medicine, Institute of Health Sciences, Oxford.
PMCID: PMC2127005 PMID: 9224131