1. Department of Archaeology, BioArCh, University of York, York, UK
2. Department of Pre- and Protohistory, Eberhard Karls Universität, Tübingen, Germany
3. Department of Pre- and Protohistory, Ludwig-Maximilians-Universität Munich, Munich, Germany
4. Department of Archaeological and Forensic Sciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
5. Department of Chemistry, University of York, York, UK