1. DFG Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
2. Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital Carl Gustav Carus and Faculty of Medicine, TU Dresden, Dresden, Germany
3. Institute of Diabetes Research, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich-Neuherberg, Germany
4. School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany