About the Authors

Stephan Martin

stephan.martin@uni-duesseldorf.de

Current address: West-German Centre of Diabetes and Health, Verbund Katholischer Kliniken Düsseldorf, Düsseldorf, Germany

Affiliation Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Düsseldorf, Germany

Christian Herder

Affiliation Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Düsseldorf, Germany

Nanette C. Schloot

Affiliations Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Düsseldorf, Germany, Departments of Medicine and Metabolic Diseases, University Hospital, Düsseldorf, Germany

Wolfgang Koenig

Affiliation Department of Internal Medicine II - Cardiology, University of Ulm Medical Center, Ulm, Germany

Tim Heise

Affiliation Profil Institute for Metabolic Research, Neuss, Germany

Lutz Heinemann

Affiliation Profil Institute for Metabolic Research, Neuss, Germany

Hubert Kolb

Current address: Immunobiology Research Group, University Hospital, University of Düsseldorf, Düsseldorf, Germany

Affiliation Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Düsseldorf, Germany

on behalf of the DIATOR Study Group

A complete list of the DIATOR Study Group can be found in the Acknowledgments.

Competing Interests

The authors have read the journal's policy and have the following conflicts: T. Heise and L. Heinemann are employed by Profil Institute of Metabolic Research which was contracted to conduct the trial. No other potential conflicts of interest relevant to this article were reported. Pfizer Pharma GmbH, Berlin, Germany also funded this study. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SM HK. Performed the experiments: SM TH LH NCS WK CH. Analyzed the data: TH HK SM CH. Contributed reagents/materials/analysis tools: SM TH LH NCS WK CH. Wrote the paper: HK SM TH LH NCS WK CH.