[1] Linnaeus Univ, Fac Hlth & Life Sci, Vaxjo, Sweden
[2] Linnaeus Univ, Ctr Interprofess Collaborat Emergency Care CICE, Vaxjo, Sweden
[3] Dept Ambulance Serv, Vaxjo, Sweden
[4] Dept Ambulance Serv, Kalmar, Sweden
[5] Lund Univ, Dept Hlth Sci, Lund, Sweden
[6] Helsingborg Gen Hosp, Emergency Dept, Helsingborg, Sweden
[7] Univ Boras, Fac Caring Sci Work Life & Social Welf, Boras, Sweden
[8] Queensland Univ Technol, Fac Hlth, Brisbane, Qld, Australia
[9] Univ Hertfordshire, Paramed Clin Res Unit ParaCRU, Hatfield, Herts, England
[10] Uppsala Univ, Ctr Clin Res Sormland, Eskilstuna, Sweden
[11] Dept Ambulance Serv, Reg Sormland, Katrineholm, Sweden