1. Department of Rheumatology, Lille Catholic Hospitals, University of Lille, Lomme, France
2. EA 4490, PMOI, Physiopathologie des Maladies Osseuses Inflammatoires, University of Lille, Lille, France
3. Department of Rheumatology, Assistance Publique-Hôpitaux de Paris, Hôpital Lariboisiere, Paris, France
4. INSERM U1132 and University Paris-Diderot, Paris, France