title: Doctors and prehospital on-scene times: effect is still debatable.
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Quinn
authors.forename: James
authors.initials: J
authors.lastname: French
authors.forename: Rod
authors.initials: R
authors.lastname: Mackenzie
mesh_terms: D015982:Bias; D015986:Confounding Factors, Epidemiologic; D004632:Emergency Medical Services / Q000379:methods*; D006801:Humans; D013997:Time Factors