Estimating Harrell’s optimism using bootstrap samples Cenzer IS, Miao Y, Kirby K, Boscardin WJ . Proceedings of the Western Users of Sas Software Conference. Estimating Harrell’s optimism using bootstrap samples. 2012; 74(12). 2012 https://researcherprofiles.org/profile/80606330 Cenzer IS, Miao Y, Kirby K, Boscardin WJ