title: Effectiveness of regional trauma systems. Wrong comparisons were made.
authors.forename: M J
authors.initials: MJ
authors.lastname: Parr
authors.forename: J P
authors.initials: JP
authors.lastname: Nolan
mesh_terms: D006767:Hospitals, District; D006801:Humans; D012041:Regional Medical Programs / Q000592:standards*; D014193:Trauma Centers / Q000592:standards*; D006113:United Kingdom / Q000453:epidemiology; D014947:Wounds and Injuries / Q000401:mortality