1. Department of Experimental and Clinical Medicine, Pancreatic islets laboratory, University of Pisa , Pisa , Italy
2. Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa , Genoa , Italy
3. ULB Center for Diabetes Research , Université Libre de Bruxelles, Brussels , Belgium
4. Division of Endocrinology, Erasmus Hospital , Université Libre de Bruxelles, Brussels , Belgium