title: Tertiary care: a changing environment.
authors: Southern Illinois University School of Medicine, 801 N. Rutledge, Springfield, IL 62794-9622, USA. agunderson@siumed.edu
authors: A
authors: A
authors: Gunderson
mesh_terms: D000368:Aged; D006801:Humans; D006278:Medicare; D019145:Rehabilitation Nursing