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Int J Epidemiol. 2002 Apr;31(2):422-9.

Estimating causal effects.

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  • 1University of Minnesota School of Public Health, Mayo Mail Code 807, 420 Delaware St. SE, Minneapolis, MN 55455-0392, USA. GMPhD@umn.edu

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PMID:
11980807
[PubMed - indexed for MEDLINE]
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