[1] I CHER, Jette, Belgium
[2] Pain Mot Int Res Grp, Jette, Belgium
[3] Vrije Univ Brussel, Fac Med & Pharmacy, Dept Publ Hlth GEWE, Bldg K,Laarbeeklaan 103, BE-1090 Jette, Belgium
[4] Vrije Univ Brussel, Fac Phys Educ & Physiotherapy KIMA, Dept Physiotherapy Human Physiol & Anat, Bldg F,Laarbeeklaan 103, B-1090 Jette, Belgium
[5] Univ Ziekenhuis Brussel, Dept Phys Med & Physiotherapy, Laarbeeklaan 101, B-1090 Jette, Belgium
[6] Univ Ziekenhuis Brussel, Dept Neurosurg, Laarbeeklaan 101, B-1090 Jette, Belgium
[7] Vrije Univ Brussel, Fac Med & Pharmacy, Ctr Neurosci, Laarbeeklaan 103, B-1090 Jette, Belgium
[8] Vrije Univ Brussel, Fac Med & Pharmacy, Dept Manual Therapy MANU, Laarbeeklaan 103, B-1090 Jette, Belgium
[9] Vrije Univ Brussel, Fac Med & Pharmacy, Dept Biostat & Med Informat, Laarbeeklaan 103, B-1090 Jette, Belgium
[10] Vrije Univ Brussel, Interface Demog, Pl Laan 5, B-1050 Brussels, Belgium
[11] Univ Pompeu Fabra, Hlth Inequal Res Grp GREDS, Ramon Trias Fargas 25-27, Barcelona 08005, Spain