1. Research Unit SPHERES University of Liège Avenue de Longwy 185 Arlon 6700 Belgium
2. Laboratório de Primatologia, Departamento de Zoologia Universidade Estadual Paulista (UNESP) Avenida 24A, 1515 Rio Claro Sao Paulo 13506–900 Brazil
3. Research Unit FOCUS University of Liège Allée du six Août 11 Liège 4000 Belgium