1 Rheumatology Department, CHRU de BESANCON, 25000 Besancon, France.
2 Rheumatology Department, CHRU de BESANCON, 25000 Besancon, France; EA 4267 "PEPITE", University of Bourgogne Franche-Comté, 25000 Besancon, France.
3 Rheumatology Department, CHRU de BESANCON, 25000 Besancon, France; EA4266 "EPILAB" University of Bourgogne Franche-Comté, 25000 Besancon, France.
4 Rheumatology Department, CHRU de BESANCON, 25000 Besancon, France; EA 4267 "PEPITE", University of Bourgogne Franche-Comté, 25000 Besancon, France. Electronic address: fverhoeven@chu-besancon.fr.