[1] Univ Hosp Southern Denmark, Hosp Sonderjylland, Dept Orthopaed Surg, Aabenraa, Denmark
[2] Univ Southern Denmark, Dept Reg Hlth Res, Odense, Denmark
[3] Univ Hosp Southern Denmark, Danish Hosp Rheumat Dis, Sonderborg, Denmark
[4] Univ Hosp Southern Denmark, Hosp Sonderjylland, Aabenraa, Denmark
[5] Univ Hosp Southern Denmark, Kolding Hosp, Dept Anaesthesiol & Intens Care, Kolding, Denmark
[6] Univ Hosp Southern Denmark, Vejle Hosp, Dept Anaesthesiol & Intens Care, Vejle, Denmark
[7] Univ Hosp Southern Denmark, Hosp Sonderjylland, Dept Emergency Med, Aabenraa, Denmark
[8] Univ Hosp Southern Denmark, Res Unit Hlth Sci, Esbjerg, Denmark
[9] Univ Coll South Denmark, Aabenraa, Denmark
[10] Univ Hosp Southern Denmark, Med Res Unit, Sonderborg, Denmark