Use of prehospital care providers in emergency departments: a national survey.
D000488:Allied Health Personnel / Q000706:statistics & numerical data*; D004634:Emergency Medical Technicians / Q000706:statistics & numerical data*; D004636:Emergency Service, Hospital; D006801:Humans; D009726:Nurses / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires; D014481:United States