1. Endokrinologie in Charlottenburg, Berlin, Germany
2. Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
3. Institute of Epidemiology, Helmholtz Zentrum München, German Research Center of Environmental Health, Neuherberg, Germany
4. Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Duesseldorf, Germany
5. German Center for Diabetes Research, Munich–Neuherberg, Germany
6. Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, Universitätsspital Zürich, Zurich, Switzerland
7. Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
8. Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Duesseldorf, Germany