How many emergency department visits are there?
Wears
Robert L
RL
D000553:Ambulatory Care / Q000706:statistics & numerical data*; D003625:Data Collection / Q000379:methods; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D010342:Patient Acceptance of Health Care / Q000706:statistics & numerical data*; D014481:United States / Q000453:epidemiology; D014600:Utilization Review / Q000379:methods