1. Department of Biomedical Science, University of Siena, Siena
2. Department of Paediatrics, Rheumatology Unit, Anna Meyer Children's Hospital and University of Florence
3. Department of Pediatric Sciences, Università Cattolica Sacro Cuore, Rome
4. Interdepartmental Research Center of Systemic Autoimmune and Autoinflammatory Diseases, Unit of Immunological Sciences, Policlinico Le Scotte, University of Siena, Siena, Italy
5. Department of Evolutionary Biology, University of Siena, Siena