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Causal inference based on counterfactuals
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Correspondence: M Höfler hoefler@mpipsykl.mpg.de
BMC Medical Research Methodology 2005, 5:28 doi:10.1186/1471-2288-5-28
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Correspondence: M Höfler hoefler@mpipsykl.mpg.de
BMC Medical Research Methodology 2005, 5:28 doi:10.1186/1471-2288-5-28