Hospitals in chains: the transformation of American health institutions.
D004469:Economics, Hospital; D005376:Financial Management / Q000639:trends*; D005377:Financial Management, Hospital / Q000639:trends*; D006777:Hospitals, Proprietary / Q000191:economics*; D006788:Hospitals, Voluntary / Q000191:economics*; D008484:Medicaid / Q000191:economics; D008489:Medical Indigency; D014481:United States