title: The Covariate's Dilemma.
authors.affiliation: Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America.
authors.forename: Joel
authors.initials: J
authors.lastname: Mefford
authors.forename: John S
authors.initials: JS
authors.lastname: Witte
mesh_terms: D016022:Case-Control Studies; D056726:Genetic Association Studies / Q000379:methods / Q000706:statistics & numerical data; D006801:Humans