1. Department of Evolutionary Anthropology, Duke University , Durham, NC 27708 , United States
2. Department of Anthropology, University of Toronto , Toronto , Ontario M5S 2S2 , Canada
3. Institute of Zoology, University of Veterinary Medicine Hannover , Foundation, 30559 Hannover , Germany
4. Department of Anthropology, University of Western Ontario , London, Ontario N6A 5C2 , Canada
5. Department of Anthropology, University of Toronto Mississauga , Mississauga, Ontario L5L 1C6 , Canada
6. Human Evolution Research Institute, University of Cape Town , Cape Town 7701 , South Africa
7. Department of Anthropology, University of Toronto Scarborough , Toronto, Ontario M1C 1A4 , Canada