About the Authors

June Y. T. Po

Affiliation Department of Global Health and Population, 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: SVS. Performed the experiments: JP SVS. Analyzed the data: JP. Contributed reagents/materials/analysis tools: JP SVS. Wrote the paper: JP SVS.