1. Mosaiques Diagnostics GmbH, Hannover, Germany
2. Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
3. Institute for Clinical Chemistry and Pathobiochemistry/Central Laboratory, University of Tübingen, Tübingen, Germany
4. German Center for Diabetes Research, Tübingen; Germany
5. Institute for Diabetes Research and Metabolic Diseases, Helmholtz Centre Munich, University of Tübingen, Tübingen, Germany