1. Center for the Advanced Study of Human Paleobiology, Department of Anthropology, The George Washington University, Washington, DC, USA
2. Behavioural Ecology and Ecophysiology Group, Department of Biology, University of Antwerp, Wilrijk, Belgium
3. Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium
4. Michale E. Keeling Center for Comparative Medicine and Research, the University of Texas MD Anderson Cancer Center, Bastrop, TX, USA
5. Neuroscience Institute and Language Research Center, Georgia State University, Atlanta, GA USA
6. Ape Cognition and Conservation Initiative, Des Moines, IA, USA
7. Salto Agro- and Biotechnology, Odisee University College, Sint-Niklaas, Belgium