About the Authors
- Cristina M. Gomes, Christophe Boesch
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
The authors have declared that no competing interests exist.
Conceived and designed the experiments: CMG CB. Performed the experiments: CMG. Analyzed the data: CMG CB. Contributed reagents/materials/analysis tools: CMG CB. Wrote the paper: CMG CB.