About the Authors
- Herman Pontzer
- Department of Anthropology, Washington University, St. Louis, Missouri, United States of America
- Vivian Allen, John R. Hutchinson
- Structure and Motion Laboratory, Department of Veterinary Basic Sciences, The Royal Veterinary College, London, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: HP JH. Performed the experiments: HP JH. Analyzed the data: HP JH. Contributed reagents/materials/analysis tools: VA. Wrote the paper: HP VA JH.