title: Commentary: are we splitting hairs over splitting DRGs?
authors: Institute for Health Services Research, University of Minnesota, Minneapolis 55455.
authors: R
authors: R
authors: Feldman
mesh_terms: D003953:Diagnosis-Related Groups / Q000191:economics / Q000706:statistics & numerical data*; D006302:Health Services Research / Q000379:methods; D006801:Humans; D008433:Mathematics; D015233:Models, Statistical