About the Authors

Kristen M. Little

klittl11@jhu.edu

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

Madhukar Pai

Affiliation Department of Epidemiology, Biostatistics, and Occupational Health, McGill University and McGill International TB Centre, Montreal, Canada

David W. Dowdy

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

Competing Interests

The authors have declared no financial or industry conflicts. MP serves as a consultant for the Bill & Melinda Gates Foundation (BMGF). BMGF had no involvement in this manuscript. MP and DD are Section Editors with PLOS ONE. MP is on the editorial board of PLOS Medicine. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials. The other authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KML MP DWD. Analyzed the data: KML DWD. Contributed reagents/materials/analysis tools: MP DWD KML. Wrote the paper: KML MP DWD.