The persistence of ventricular fibrillation and its implication for evaluating EMS.
D004632:Emergency Medical Services / Q000592:standards*; D005069:Evaluation Studies as Topic; D006801:Humans; D010043:Outcome and Process Assessment, Health Care; D013997:Time Factors; D014693:Ventricular Fibrillation / Q000453:epidemiology*; D014861:Washington