1. BioArCh, Departments of Biology, Archaeology and Chemistry, University of York, York, UK
2. Max Planck Institute for Evolutionary Anthropology, 04013 Leipzig, Germany
3. Department of Biology, Penn State University, University Park, PA 16802-5301, USA
4. Institute of Legal Medicine, University of Düsseldorf, Moorenstraße 5, 40225 Düsseldorf, Germany