Drugs, physicians, and hospitalization.
D000553:Ambulatory Care / Q000191:economics*; D003365:Costs and Cost Analysis; D004363:Drug Utilization / Q000191:economics*; D006760:Hospitalization / Q000191:economics*; D013677:Medical Laboratory Science / Q000191:economics; D008962:Models, Theoretical; D010820:Physicians; D011364:Professional Practice; D013223:Statistics as Topic; D014481:United States