1. Psychology Department University of Wisconsin Madison Wisconsin USA
2. Wisconsin National Primate Research Center Madison Wisconsin USA
3. Department of Behavioral Science University of Kentucky College of Medicine Lexington Kentucky USA
4. Department of Psychology Georgia State University Atlanta Georgia USA
5. Department of Comparative Medicine The University of Texas M. D. Anderson Cancer Center Bastrop Texas USA
6. Department of Experimental Medicine University of Copenhagen Copenhagen Denmark
7. Center for the Advanced Study of Human Paleobiology Department of Anthropology The George Washington University Washington District of Columbia USA
8. Center for Behavioral Neuroscience Georgia State University Atlanta Georgia USA