About the Authors

Michael R. Martin

martinm@csr.nih.gov

Affiliation Office of the Director, Center for Scientific Review, Bethesda, Maryland, United States of America

Andrea Kopstein

Affiliation Substance Abuse and Mental Health Services Administration (SAMHSA), Director of the Office of Program Analysis, Bethesda, Maryland, United States of America

Joy M. Janice

Affiliation Tunnell Government Services, Bethesda, Maryland, United States of America

Competing Interests

Drs. Martin and Kopstein are employees of the Department of Health and Human Services. Ms. Janice is a consultant. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MRM. Performed the experiments: MRM AK. Analyzed the data: MRM AK JMJ. Contributed reagents/materials/analysis tools: AK JMJ. Wrote the paper: MRM AK JMJ.