title: [A single nighttime trauma helicopter does not represent a significant improvement in emergency assistance].
authors.forename: I B
authors.initials: IB
authors.lastname: Schipper
mesh_terms: D017732:Air Ambulances; D004632:Emergency Medical Services / Q000592:standards* / Q000706:statistics & numerical data*; D006801:Humans; D009426:Netherlands; D014187:Transportation of Patients