[1] Narha San Sodra Torget Hlth Care Ctr, Kvarngatan 4, SE-50336 Boras, Sweden
[2] Res & Dev Ctr Sodra Alvsborg, Res & Dev Primary Hlth Care, Region Vastra Gotaland, Boras, Sweden
[3] Univ Gothenburg, Primary Hlth Care Publ Hlth & Community Med, Sch Publ Hlth, Inst Med,Sahlgrenska Acad, Gothenburg, Sweden
[4] Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Unit Physiotherapy,Dept Hlth & Rehabil, Gothenburg, Sweden
[5] Res & Dev Ctr Fyrbodal, Res & Dev Primary Hlth Care, Gothenburg, Sweden
[6] Res & Dev Ctr Gothenburg, Res & Dev Primary Hlth Care, Gothenburg, Sweden
[7] Univ Gothenburg, Sahlgrenska Acad, Inst Hlth & Care Sci, Gothenburg, Sweden
[8] Narhalsan Svenljunga Hlth Care Ctr, Svenljunga, Sweden
[9] Narhalsan Boras Youth Ctr, Region Vastra Gotaland, Boras, Sweden