1. Department of Rheumatology, San Pietro Fatebenefratelli Hospital RomeItaly
2. Research Centre, San Pietro Fatebenefratelli Hospital Rome Italy
3. Istituto Superiore di Sanità Rome Italy
4. ISBEM Research Centre Brindisi Italy
5. Division of Clinical Immunology and Rheumatology, Sapienza University of Rome, 2nd School of Medicine, St Andrea Hospital Rome Italy
6. Department of Radiology, San Pietro Fatebenefratelli Hospital Rome Italy