1 Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Department of Pediatrics, University of Cincinnati Medical School, Cincinnati, Ohio, USA;
2 Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy; and Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy domenico.mavilio@unimi.it.