1] Division of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy [2] Endocrinology, Department of Clinical & Experimental Medicine, University of Piemonte Orientale, Novara, Italy [3] Interdisciplinary Center for Obesity Study (ICOS), University of Piemonte Orientale, Novara, Italy. 1] Division of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy [2] Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale, Novara, Italy. Division of Endocrinology, Diabetology and Metabolism, Department of Medical Sciences, University of Torino, Torino, Italy. Division of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy. 1] Division of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy [2] Interdisciplinary Center for Obesity Study (ICOS), University of Piemonte Orientale, Novara, Italy. 1] Division of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy [2] Interdisciplinary Center for Obesity Study (ICOS), University of Piemonte Orientale, Novara, Italy [3] Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale, Novara, Italy.