About the Authors

David C. Butler

Affiliations Wadsworth Center, New York State Department of Health, Albany, New York, United States of America, Department of Biomedical Sciences, University at Albany, Albany, New York, United States of America

Anne Messer

messer@wadsworth.org

Affiliations Wadsworth Center, New York State Department of Health, Albany, New York, United States of America, Department of Biomedical Sciences, University at Albany, Albany, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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