1. Institute for Clinical Chemistry and Laboratory Medicine University Clinic Carl Gustav Carus Technische Universität Dresden Dresden Germany
2. Faculty of Science University of South Bohemia České Budějovice Czech Republic
3. Department of Physiology Medical School National and Kapodistrian University of Athens Athens Greece
4. Paul Langerhans Institute Dresden of the Helmholtz Center Munich University Hospital and Faculty of Medicine TU Dresden Dresden Germany
5. German Center for Diabetes Research (DZD) Neuherberg Germany