About the Authors
- Raphael H. Heiberger
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* E-mail: raphael.heiberger@uni-bremen.de
Affiliation Institute for Sociology, University of Bremen, Bremen, Germany
Competing Interests
The author has declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: RHH. Performed the experiments: RHH. Analyzed the data: RHH. Contributed reagents/materials/analysis tools: RHH. Wrote the paper: RHH.