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BMJ. 2001 Jul 7;323(7303):42-6.

Systematic reviews in health care: Assessing the quality of controlled clinical trials.

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1
Department of Social and Preventive Medicine, University of Bern, Bern, 3012 Switzerland.
PMID:
11440947
PMCID:
PMC1120670
[Indexed for MEDLINE]
Free PMC Article

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