About the Authors

Sandra Anne Banack, James S. Metcalf, Paul Alan Cox
Institute for Ethnomedicine, Jackson, Wyoming, United States of America

Liying Jiang, Leopold L. Ilag
Department of Analytical Chemistry, Stockholm University, Stockholm, Sweden

Derek Craighead
Craighead Beringia South, Kelly, Wyoming, United States of America

Corresponding Author

paul@ethnomedicine.org

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SAB JSM PAC. Performed the experiments: SAB JSM LJ LLI. Analyzed the data: SAB JSM LJ LLI. Contributed reagents/materials/analysis tools: SAB JSM DC PAC. Wrote the paper: SAB JSM LLI PAC.