[1] Lund Univ, Skane Univ Hosp Malmo, Dept Orthoped, Lund, Sweden
[2] Lund Univ, Skane Univ Hosp Malmo, Dept Clin Sci, Lund, Sweden
[3] Lund Univ, Dept Rheumatol, Lund, Sweden
[4] Lund Univ, Dept Clin Sci Lund, Lund, Sweden
[5] Sahlgrenska Univ Hosp Goteborg, Dept R&D, Gothenburg, Sweden
[6] Halmstad Univ, Sch Business Engn & Sci, Halmstad, Sweden