1. Department of Anthropology, PO Box 750336, Southern Methodist University, Dallas, Texas, 75275, United States of America
2. Centre Universitaire de Recherche et de Documentation en Histoire et Archéologie Centraficaines, Avenue des Martyrs, Université de Bangui, Central African Republic
3. Royal Museum for Central Africa Heritage Studies, 13 Leuvensesteenweg, 3080, Tervuren, Belgium
4. Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
5. Far Western Anthropological Research Group, 3656 Research Way, Carson City, Nevada, 89706, United States of America.