About the Authors

Jessica M. Perkins

Affiliation Department of Health Policy, Harvard University, Cambridge, Massachusetts, United States of America

Kashif T. Khan

Affiliation Department of Population and International Health, Harvard School of Public Health, Boston, Massachusetts, United States of America

S. V. Subramanian

svsubram@hsph.harvard.edu

Affiliation Department of Society, Human Development and Health, Harvard School of Public Health, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KTK SVS. Performed the experiments: KTK. Analyzed the data: KTK JP SVS. Contributed reagents/materials/analysis tools: KTK JP SVS. Wrote the paper: KTK JP SVS.