About the Authors

Björn Friedrich

Contributed equally to this work with: Björn Friedrich, Peter Weyrich

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Peter Weyrich

Contributed equally to this work with: Björn Friedrich, Peter Weyrich

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Alena Stančáková

Affiliation Department of Medicine, Kuopio University Hospital, Kuopio, Finland

Jianjung Wang

Affiliation Department of Medicine, Kuopio University Hospital, Kuopio, Finland

Johanna Kuusisto

Affiliation Department of Medicine, Kuopio University Hospital, Kuopio, Finland

Markku Laakso

Affiliation Department of Medicine, Kuopio University Hospital, Kuopio, Finland

Giorgio Sesti

Affiliation Department of Experimental and Clinical Medicine, Polyclinic Mater Domini, University Magna Graecia of Catanzaro, Catanzaro, Italy

Elena Succurro

Affiliation Department of Experimental and Clinical Medicine, Polyclinic Mater Domini, University Magna Graecia of Catanzaro, Catanzaro, Italy

Ulf Smith

Affiliation The Lundberg Laboratory for Diabetes Research, Department of Internal Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden

Torben Hansen

Affiliation The Steno Diabetes Center, Copenhagen, Denmark

Oluf Pedersen

Affiliations The Steno Diabetes Center, Copenhagen, Denmark, Faculty of Health Science, University of Copenhagen, Copenhagen, Denmark

Fausto Machicao

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Silke Schäfer

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Florian Lang

Affiliation Department of Physiology, University of Tübingen, Tübingen, Germany

Teut Risler

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Susanne Ullrich

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Norbert Stefan

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Andreas Fritsche

andreas.fritsche@med.uni-tuebingen.de

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Hans-Ulrich Häring

Affiliation Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, University of Tübingen, Tübingen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ML GS US TH OP FM NS AF HUH. Performed the experiments: AS JW JK ES OP SAS. Analyzed the data: BF PW AS JW JK ML GS ES US TH OP FM FL TR SU NS AF HUH. Contributed reagents/materials/analysis tools: FM HUH. Wrote the paper: BF PW AF.