Stephen R Cole , Miguel A Hernán : Fallibility in Estimating Direct Effects. Int J Epidemiol. 2002 Feb;31(1):163-5. PMID: 11914315 Fallibility in estimating direct effectsAbstract. We use causal graphs and a partly hypothetical exaacademic.oup.com  疫学者は、多くの場合で曝露が…