title: Reexamining the Ecology of Medical Care.
authors: Ohio State University, Columbus, OH michael.johansen@osumc.edu.
authors: Michael E
authors: ME
authors: Johansen
authors: Sheetal M
authors: SM
authors: Kircher
authors: Timothy R
authors: TR
authors: Huerta
mesh_terms: D006296:Health Services / Q000706:statistics & numerical data / Q000639:trends*; D006760:Hospitalization / Q000639:trends*; D006801:Humans; D014481:United States