About the Authors

Fabian Steffler

Affiliation Straubing Center of Science, Technische Universität München, Straubing, Germany

Volker Sieber

sieber@tum.de

Affiliation Straubing Center of Science, Technische Universität München, Straubing, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FS VS. Performed the experiments: FS. Analyzed the data: FS VS. Contributed reagents/materials/analysis tools: VS. Wrote the paper: FS VS.