About the Authors

Lise Harvig

Affiliation Laboratory of Biological Anthropology, Department of Forensic Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark

Karin Margarita Frei

Affiliation National Museum of Denmark, Conservation and Natural Sciences Department, and The Danish National Research Foundation’s Centre for Textile Research (CTR) Prinsens Palæ, Copenhagen, Denmark

T. Douglas Price

Affiliation Laboratory for Archaeological Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Niels Lynnerup

nly@sund.ku.dk

Affiliation Laboratory of Biological Anthropology, Department of Forensic Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LH NL. Performed the experiments: LH KMF. Analyzed the data: LH KMF NL. Contributed reagents/materials/analysis tools: LH KMF. Wrote the paper: LH KMF TDP NL.