1. Paleoanthropology Group; Department of Paleobiology; Museo Nacional de Ciencias Naturales (MNCN-CSIC); Madrid Spain
2. Department of Stomatology; Faculty of Medicine; University Rey Juan Carlos; Alcorcon Spain
3. Department of Human Evolution; Max Planck Institute for Evolutionary Anthropology; Leipzig Germany
4. Department of Anthropology; University of Vienna; Vienna Austria
5. Department of Statistics; University of Washington; Seattle WA USA
6. Department of Theoretical Biology; University of Vienna; Vienna Austria