1. Max Planck Institute for Evolutionary Anthropology; Department of Human Evolution; Deutscher Platz 6 04103 Leipzig Germany
2. Max Planck Institute for Evolutionary Anthropology; Department of Primatology; Deutscher Platz 6 04103 Leipzig Germany
3. Department of Anthropology; University of British Columbia; 6303 NW Marine Drive, Vancouver British Canada V6T 1Z1
4. Laboratory of Biodiversity and Evolutionary Genomics; Centre for Archaeological Sciences, University of Leuven; Ch. Deberiotstraat 32 B-3000 Leuven Belgium