Prisca Chapouton1,2, Heiko Lickert3,4,5. 1. Institute of Diabetes and Regeneration Research, Helmholtz Diabetes Center, Helmholtz Zentrum München, Munich, Germany. 2. German Center for Diabetes Research (DZD), Munich, Germany. 3. Institute of Diabetes and Regeneration Research, Helmholtz Diabetes Center, Helmholtz Zentrum München, Munich, Germany. heiko.lickert@helmholtz-muenchen.de. 4. German Center for Diabetes Research (DZD), Munich, Germany. heiko.lickert@helmholtz-muenchen.de. 5. School of Medicine, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany. heiko.lickert@helmholtz-muenchen.de.