1. Department of Biology, Duke University, Durham NC, USA.
2. Department of Biological Sciences, State University of New York at Oswego, Oswego NY, USA.
3. Department of Statistical Science, Duke University, Durham NC, USA.
4. Department of Anthropology, The University of Texas at San Antonio, San Antonio TX, USA.
5. Department of Evolutionary Anthropology, Duke University, Durham NC, USA.
6. Duke Population Research Institute, Duke University, Durham NC, USA.
7. Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.
8. Canadian Institute for Advanced Research, Toronto, Ontario, Canada.
9. Department of Biological Sciences, University of Notre Dame, Notre Dame IN, USA.