1. Platform of Clinical Investigation Department, Inserm CIC 1405, University Hospital Clermont-Ferrand, F-63000 Clermont-Ferrand, France
2. Inserm 1107, Neuro-Dol, University Clermont Auvergne, F-63000 Clermont-Ferrand, France
3. Rheumatology Department, University Hospital Clermont-Ferrand, F-63000 Clermont-Ferrand, France