Prehospital emergency cardiac care in Virginia: five years of progess.
D002300:Cardiac Care Facilities; D003645:Death, Sudden; D004632:Emergency Medical Services; D004634:Emergency Medical Technicians; D006266:Health Education; D006323:Heart Arrest / Q000628:therapy; D006782:Hospitals, Special; D006801:Humans; D012151:Resuscitation; D014768:Virginia