About the Authors

Elisabeth Oberzaucher

elisabeth.oberzaucher@univie.ac.at

Affiliation Department of Anthropology, University of Vienna, Vienna, Austria

Karl Grammer

Affiliation Department of Anthropology, University of Vienna, Vienna, Austria

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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