1. Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5–7, 1350 Copenhagen, Denmark.
2. Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK.
3. Department of Human Genetics, University of Chicago, 920 East 58th Street, Cummings Life Science Center, Chicago, IL 60637, USA.
4. The Bioinformatics Center, University of Copenhagen, Ole Maaløes Vej 5, 2200 København N, Denmark.
5. Environmental Futures Research Institute, Griffith University, 170 Kessels Road, Nathan, Brisbane, Queensland 4111, Australia.
6. Department of Physical Anthropology, Kunstkamera, Peter the Great Museum of Anthropology and Ethnography, Russian Academy of Sciences, 24 Srednii Prospect, Vassilievskii Island, St. Petersburg, Russia.
7. Center for the Study of the First Americans and Department of Anthropology, Texas A&M University, TAMU-4352, College Station, Texas 77845-4352, USA.
8. Department of Epidemiology and Biostatistics, University of California San Francisco, 185 Berry Street, Lobby 5, Suite 5700, San Francisco, CA 94107, USA.
9. Division of Archaeology, University of Cambridge, Cambridge, Downing Street, CB2 3DZ, UK.
10. Department of Human Evolution, Max-Planck-Institute for Evolutionary Anthropology, Leipzig, Deutscher Platz 6, D-04103, Germany.
11. Leverhulme Centre for Human Evolutionary Studies, Department of Archaeology and Anthropology, University of Cambridge, Cambridge, Fitzwilliam Street, CB2 1QH, UK.