1. Autoimmune Diseases Research Unit, Biocruces Bizkaia Health Research Institute , The Basque Country, Bizkaia, Spain
2. University of The Basque Country , The Basque Country, Bizkaia, Spain
3. First Department of Propaedeutic Internal Medicine, Joint Academic Rheumatology Program, Medical School, National and Kapodistrian University of Athens , Athens, Greece
4. Department of Women & Children’s Health, King’s College London , London, UK