Effect modification and the limits of biological inference from epidemiologic data.
Thompson
W D
WD
Department of Applied Medical Sciences, University of Southern Maine, Portland 04103.
D001943:Breast Neoplasms / Q000453:epidemiology / Q000209:etiology; D016022:Case-Control Studies; D004813:Epidemiology; D006801:Humans; D008954:Models, Biological; D012307:Risk Factors