[1] Reg Sormland, Dept Ambulance Serv, Eskilstuna, Sweden
[2] Linnaeus Univ, Fac Hlth & Life Sci, Vaxjo, Sweden
[3] Linnaeus Univ, Ctr Interprofess Collaborat Emergency Care CICE, Vaxjo, Sweden
[4] Uppsala Univ, Ctr Clin Res Sormland, Uppsala, Sweden
[5] Malardalen Univ, Sch Hlth Care & Social Welf, Eskilstuna, Sweden
[6] Univ Boras, Fac Caring Sci Work Life & Social Welf, Boras, Sweden
[7] Univ Boras, PreHospen Ctr Prehosp Res, Boras, Sweden
[8] Umea Univ, Dept Nursing, S-90187 Umea, Sweden