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Randomized trials and observational studies: still mostly similar results, still crucial differences.

作者信息

Kunz Regina

机构信息

Basel Institute for Clinical Epidemiology, University Hospital Basel, Hebelstrasse 10, 4031 Basel, Switzerland.

出版信息

J Clin Epidemiol. 2008 Mar;61(3):207-8. doi: 10.1016/j.jclinepi.2007.05.021. Epub 2008 Jan 7.

DOI:10.1016/j.jclinepi.2007.05.021
PMID:18226743
Abstract
摘要

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