1. Department of Anthropology, University of Texas at San Antonio, San Antonio, TX 78249
2. Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544
3. Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027
4. Department of Anthropology, University of Calgary, Calgary, AB T2N 1N4, Canada
5. Department of Sociology and Anthropology, James Madison University, Harrisonburg, VA 22807
6. Department of Psychology, Franklin and Marshall College, Lancaster, PA 17603
7. The Dian Fossey Gorilla Fund International, Atlanta, GA 30315
8. Department of Anthropology, University of Wisconsin–Madison, Madison, WI 53706
9. Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA 50011
10. Department of Evolutionary Anthropology, Duke University, Durham, NC 27710
11. Department of Biology, Duke University, Durham, NC 27708