Commentary: emergency medical services: just the beginning of an effective system.
McKay
Mary Pat
MP
Department of Emergency Medicine, Center for Injury Prevention and Control, The George Washington University Medical Center, Washington, DC, USA.
D004632:Emergency Medical Services / Q000266:history* / Q000458:organization & administration; D049673:History, 20th Century; D049674:History, 21st Century; D014481:United States