title: EMS & its midlife crisis.
authors.forename: John
authors.initials: J
authors.lastname: Erich
mesh_terms: D004632:Emergency Medical Services / Q000266:history* / Q000458:organization & administration*; D049673:History, 20th Century; D015969:National Academies of Science, Engineering, and Medicine, U.S., Health and Medicine Division; D014481:United States