About the Authors
- James M. Nonnemaker
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* E-mail: jnonnemaker@rti.org
Affiliation RTI International, Research Triangle Park, North Carolina, United States of America
- Jane A. Allen
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Affiliation RTI International, Research Triangle Park, North Carolina, United States of America
- Kevin C. Davis
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Affiliation RTI International, Research Triangle Park, North Carolina, United States of America
- Kian Kamyab
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Affiliation RTI International, Research Triangle Park, North Carolina, United States of America
- Jennifer C. Duke
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Affiliation RTI International, Research Triangle Park, North Carolina, United States of America
- Matthew C. Farrelly
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Affiliation RTI International, Research Triangle Park, North Carolina, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JMN KCD JCD MCF. Analyzed the data: KK. Wrote the paper: JMN JAA KCD KK.