1. Department of Human Evolution; Max Planck Institute for Evolutionary Anthropology; Deutscher Platz 6 Leipzig 04103 Germany
2. CNR Institute of Clinical Physiology; National Research Council; Via G. Moruzzi 1 Pisa 56124 Italy
3. Department of Anthropology; University of Vienna; Althanstrasse 14 Vienna 1090 Austria
4. Direction de l'Archéologie; Service Public de Wallonie; 1 rue des Brigades d'Irlande Namur B-5100 Belgium
5. Department of Cultural Heritage; University of Bologna; Via degli Ariani 1 Ravenna 48121 Italy