1 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo P. Giaccone, Italy.
2 Biomedicine, Neuroscience and Advanced Diagnostic, University of Palermo, Italy.
3 Department of Precision Medicine, Rheumatology section, University of Campania Luigi Vanvitelli, Naples, Italy.
4 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo P. Giaccone, Italy. giuliana.guggino@unipa.it.