About the Authors
- Jennifer C. Duke
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* E-mail: jduke@rti.org
Affiliation RTI International, Research Triangle Park, NC, United States of America
- Tesfa N. Alexander
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Affiliation Center for Tobacco Products, U.S. Food and Drug Administration, Silver Spring, MD, United States of America
- Xiaoquan Zhao
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Affiliations Center for Tobacco Products, U.S. Food and Drug Administration, Silver Spring, MD, United States of America, Department of Communication, George Mason University, Fairfax, VA, United States of America
- Janine C. Delahanty
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Affiliation Center for Tobacco Products, U.S. Food and Drug Administration, Silver Spring, MD, United States of America
- Jane A. Allen
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Affiliation RTI International, Research Triangle Park, NC, United States of America
- Anna J. MacMonegle
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Affiliation RTI International, Research Triangle Park, NC, United States of America
- Matthew C. Farrelly
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Affiliation RTI International, Research Triangle Park, NC, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: J. Duke JAA MCF. Performed the experiments: J. Duke JAA MCF. Analyzed the data: J. Duke AJM. Wrote the paper: J. Duke TNA XZ J. Delahanty JAA AJM MCF.