1. Department of Speech & Hearing Science; The George Washington University; USA
2. Department of Anthropology: Center for the Advanced Study of Hominid Paleobiology; The George Washington University; USA
3. GW Institute for Neuroscience and Mind-Brain Institute; USA
4. Smithsonian Institution; National Museum of Natural History; USA
5. Department of Biology; Georgetown University; USA
6. Department of Psychology; Georgetown University; USA