1. Laboratory of Genetics (D.B., S.M., I.F., P.M.-R., M.G.), Department of Health Sciences, University of Eastern Piedmont, 28100 Novara, Italy
2. Department of Health Sciences, University of Eastern Piedmont and Interdisciplinary Research Center of Autoimmune Diseases, and Unit of Pediatrics (A.P., G.E.W., S.B., F.P., G.B.), Department of Health Sciences, University of Eastern Piedmont, 28100 Novara, Italy