About the Authors

Thomas Arn Hansen

Affiliation Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, DK-1350, Copenhagen, Denmark

Helena Fridholm

Affiliation Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, DK-1350, Copenhagen, Denmark

Tobias Guldberg Frøslev

Affiliation Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, DK-1350, Copenhagen, Denmark

Kristín Rós Kjartansdóttir

Affiliation Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, DK-1350, Copenhagen, Denmark

Eske Willerslev

Affiliation Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, DK-1350, Copenhagen, Denmark

Lars Peter Nielsen

Affiliation Department of Autoimmunology and Biomarkers, Statens Serum Institut, DK-2300, Copenhagen S, Denmark

Anders Johannes Hansen

ajhansen@snm.ku.dk

Affiliation Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, DK-1350, Copenhagen, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TAH HF KRK LPN EW AJH. Performed the experiments: TAH HF KRK. Analyzed the data: TAH HF TGF. Contributed reagents/materials/analysis tools: AJH LPN EW. Wrote the paper: TAH HF KRK TGF AJH LPN.