1. Rheumatology Unit Anna Meyer Children's Hospital Florence Italy
2. Department of Sciences for Health of Women and Child University of Florence Florence Italy
3. Immunology Unit Azienda Ospedaliero Universitaria Ospedale Pediatrico Meyer Florence Italy
4. Department of Neurosciences, Psychology, Drug Research and Child Health University of Florence Florence Italy
5. Department of Clinical Sciences and Community Health University of Milano Milan Italy
6. Department of Medical Biotechnology University of Siena Siena Italy