title: A world of 'no'.
authors.forename: Robin
authors.initials: R
authors.lastname: House
mesh_terms: D000060:Accidents, Aviation / Q000401:mortality / Q000517:prevention & control*; D017732:Air Ambulances / Q000458:organization & administration*; D004632:Emergency Medical Services; D006801:Humans; D017751:Safety Management; D014481:United States / Q000453:epidemiology