1. Chief Division of Rheumatology, Department of Medicine III, and Director, interdisciplinary University Center for Autoimmune and Rheumatic Entities (UCARE), University Medical Center and Faculty of Medicine Carl Gustav Carus at the TU Dresden, Dresden, Germany
2. Department of Clinical and Experimental Medicine, University of Pisa, Chief Division of Rheumatology, Azienda Ospedaliero Universitaria Pisana, Italy, Pisa