1. Department of Surgical and Morphological Science, Dental School, University of Insubria, 21100 Varese, Italy
2. Department of Health Sciences, University of Eastern Piedmont, 28100 Novara, Italy
3. Division of Endocrinology and Metabolism, Moriggia Pelascini Hospital, 22015 Gravedona ed Uniti, Italy
4. Department of Dental Sciences, University Vita Salute San Raffaele, 20132 Milan, Italy