title: The Maryland emergency medical services system: an update.
authors.forename: A I
authors.initials: AI
authors.lastname: Ramzy
mesh_terms: D004631:Emergency Medical Service Communication Systems; D004632:Emergency Medical Services / Q000458:organization & administration*; D004634:Emergency Medical Technicians / Q000193:education; D004636:Emergency Service, Hospital; D006801:Humans; D008396:Maryland; D014187:Transportation of Patients