title: Effects of helicopter service on survival after trauma. Miscalculation exaggerated benefits.
authors.forename: G J
authors.initials: GJ
authors.lastname: Wilkes
mesh_terms: D017732:Air Ambulances; D006801:Humans; D015601:Injury Severity Score; D008131:London; D012307:Risk Factors; D014947:Wounds and Injuries / Q000401:mortality*