[1] Sahlgrenska Univ Hosp Sahlgrenska, Dept Physiotherapy & Occupat Therapy, Gothenburg, Sweden
[2] Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, S-40530 Gothenburg, Sweden
[3] Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol Physiotherapy, S-40530 Gothenburg, Sweden
[4] Univ Boras, Ctr Prehospital Res Western Sweden, Boras, Sweden
[5] Sahlgrens Univ Hosp, Gothenburg, Sweden
[6] Univ Gothenburg, Inst Clin Sci, Dept Orthopaed, Sahlgrenska Acad, S-40530 Gothenburg, Sweden
[7] Univ Gothenburg, Dept Psychol, S-40530 Gothenburg, Sweden