[1] Amsterdam Rehabil Res Ctr, Ctr Rehabil & Rheumatol, Amsterdam, Netherlands
[2] Glasgow Caledonian Univ, Inst Appl Hlth Res, Sch Hlth & Life Sci, Glasgow G4 0BA, Lanark, Scotland
[3] Vrije Univ Amsterdam, Med Ctr, Jan van Breemen Res Inst, Ctr Rehabil & Rheumatol, Amsterdam, Netherlands
[4] Vrije Univ Amsterdam, Med Ctr, Dept Rheumatol, Amsterdam, Netherlands
[5] Univ Gothenburg, Dept Clin Neurosci & Physiol, Gothenburg, Sweden
[6] Vrije Univ Amsterdam, Med Ctr, Dept Clin Epidemiol & Biostat EMGO, Amsterdam, Netherlands
[7] Univ Med Ctr Rotterdam, Erasmus MC, Dept Orthopaed, Dept Gen Practice, Rotterdam, Netherlands
[8] Vrije Univ Amsterdam, Med Ctr, Dept Rehabil Med EMGO, Amsterdam, Netherlands
[9] Vrije Univ Amsterdam, Med Ctr, Dept Psychiat, Amsterdam, Netherlands