1. Clinic of Rheumatology, Department of Medicine (DAME), ASUFC
2. Institute of Statistics, Department of Medical Area, University of Udine , Udine
3. Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa , Pisa, Italy
4. Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens
5. Institute for Autoimmune Systemic and Neurological Diseases , Athens, Greece
6. Institute of Anatomic Pathology, Department of Medical and Biological Sciences, University of Udine, University Hospital of Santa Maria della Misericordia , Udine
7. Department of Hematology, DSM University of Trieste , Trieste
8. Hematology and SCT Unit, Università di Udine, Azienda Sanitaria-Universitaria Integrata Santa Maria Misericordia , Udine, Italy
9. Department of Pathology, Evangelismos General Hospital of Athens , Athens
10. Unit of Medical Technology, Departement of Materials Science and Engineering and Intelligent Information Systems, University of Ioannina
11. Department of Biomedical Research, Institute of Molecular Biology and Biotechnology—FORTH , Ioannina, Greece
12. Pathology Unit, San Raffaele Scientific Institute
13. Unit of Lymphoid Malignancies, San Raffaele Scientific Institute , Milan, Italy