About the Authors

Roberta W. Scherer

rscherer@jhsph.edu

Affiliation Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Pamela C. Sieving

Affiliation National Institutes of Health Library, National Institutes of Health, Bethesda, Maryland, United States of America

Ann-Margret Ervin

Affiliation Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Kay Dickersin

Affiliation Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Competing Interests

One of the co-authors, Roberta Scherer, is a PLoS ONE Editorial Board member. 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: RWS PS KD AE. Performed the experiments: RWS PS KD AE. Analyzed the data: RWS. Contributed reagents/materials/analysis tools: KD AE. Wrote the paper: RWS PS KD AE.