1. Institute for Clinical Chemistry and Pathobiochemistry, Department for Diagnostic Laboratory Medicine, University Hospital Tübingen, 72076 Tübingen, Germany
2. CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
3. Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tübingen, 72076 Tübingen, Germany
4. German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
5. Section on Experimental Radiology, Department of Diagnostic and Interventional Radiology, University Hospital Tübingen, 72076 Tübingen, Germany
6. Department of Internal Medicine IV, University Hospital Tübingen, 72076 Tübingen, Germany
7. Division of Endocrinology and Diabetology, Department of Internal Medicine 1, University Hospital Ulm, 89081 Ulm, Germany
8. Department of Sports Medicine, University Hospital Tübingen, 72076 Tübingen, Germany
9. Interfaculty Research Institute for Sports and Physical Activity, University of Tübingen, 72076 Tübingen, Germany