title: An economical and proved helicopter program for transporting the emergency critically ill and injured patient in Maryland.
mesh_terms: D000063:Accidents, Traffic; D000401:Aircraft; D000552:Ambulances; D003142:Communication; D003365:Costs and Cost Analysis; D004632:Emergency Medical Services; D004636:Emergency Service, Hospital; D004864:Equipment and Supplies; D005392:First Aid; D005843:Geography; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D007234:Infant, Premature; D008396:Maryland; D010820:Physicians; D013997:Time Factors; D014187:Transportation of Patients; D014947:Wounds and Injuries / Q000401:mortality