title: Coverage of U.S. hospitals by discharge abstract services.
mesh_terms: D000043:Abstracting and Indexing; D003625:Data Collection; D006761:Hospitals / Q000706:statistics & numerical data*; D007256:Information Systems / Q000706:statistics & numerical data*; D009309:National Center for Health Statistics, U.S.; D010351:Patient Discharge; D014481:United States