1. Department of Archaeology and Heritage Studies, Aarhus University, Aarhus, 8270 Højbjerg, Denmark.
2. Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford OX1 3QY, UK.
3. Department of Anthropology, Southern Methodist University, Dallas, TX 75275, USA.
4. Institute of Archaeology, University College London, Gordon Square, London WC1H 0PY, UK.