title: Emergency department categorization: solid first steps.
authors.forename: D
authors.initials: D
authors.lastname: Boyd
mesh_terms: D004632:Emergency Medical Services / Q000145:classification; D004635:Emergency Medicine; D004636:Emergency Service, Hospital / Q000145:classification* / Q000592:standards; D006801:Humans; D007087:Illinois; D012955:Societies, Medical; D014481:United States