title: Bulk buying.
authors: W C
authors: WC
authors: Nugent
authors: S K
authors: SK
authors: Plume
mesh_terms: D001026:Coronary Artery Bypass / Q000191:economics* / Q000706:statistics & numerical data*; D017721:Hospital Costs; D006801:Humans; D008404:Massachusetts; D011787:Quality of Health Care; D016896:Treatment Outcome