title: Physician extenders in the emergency department.
authors.forename: J R
authors.initials: JR
authors.lastname: Hedges
mesh_terms: D003362:Cost-Benefit Analysis; D004634:Emergency Medical Technicians; D004636:Emergency Service, Hospital / Q000458:organization & administration*; D006801:Humans; D009722:Nurse Practitioners; D010823:Physician Assistants; D006113:United Kingdom