About the Authors

Eric M. Winder

eric.winder@pnnl.gov

Affiliation Pacific Northwest National Laboratory, Sequim, Washington, United States of America

George T. Bonheyo

Affiliation Pacific Northwest National Laboratory, Sequim, Washington, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EMW GTB. Performed the experiments: EMW. Analyzed the data: EMW GTB. Contributed reagents/materials/analysis tools: EMW GTB. Wrote the paper: EMW GTB.