title: 1992 Almanac. EMS in the United States: a survey of providers in the 200 most populous cities.
authors: G A
authors: GA
authors: Cady
mesh_terms: D002391:Catchment Area, Health; D003710:Demography; D004632:Emergency Medical Services; D005069:Evaluation Studies as Topic; D005249:Fees and Charges / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires; D014481:United States; D014505:Urban Population