About the Authors

Marion Selt

Affiliation In-vivo-NMR Laboratory, Max Planck Institute for Metabolism Research, Cologne, Germany

Annette Tennstaedt

Affiliation In-vivo-NMR Laboratory, Max Planck Institute for Metabolism Research, Cologne, Germany

Andreas Beyrau

Affiliation In-vivo-NMR Laboratory, Max Planck Institute for Metabolism Research, Cologne, Germany

Melanie Nelles

Affiliation In-vivo-NMR Laboratory, Max Planck Institute for Metabolism Research, Cologne, Germany

Gabriele Schneider

Affiliation In-vivo-NMR Laboratory, Max Planck Institute for Metabolism Research, Cologne, Germany

Clemens Löwik

Affiliation Dept. of Radiology, Leiden University Medical Center, Leiden, The Netherlands

Mathias Hoehn

mathias@sf.mpg.de

Affiliations In-vivo-NMR Laboratory, Max Planck Institute for Metabolism Research, Cologne, Germany, Dept. of Radiology, Leiden University Medical Center, Leiden, The Netherlands, Percuros B.V., Enschede, The Netherlands

Competing Interests

The funder (Percuros) provided support in the form of salaries for one author (MH), but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific role of this author is articulated in the “author contributions" section. This did not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MS AT CL MH. Performed the experiments: MS AB MN GS. Analyzed the data: MS AT MH. Contributed reagents/materials/analysis tools: CL. Wrote the paper: MS AT CL MH.