About the Authors

Tracy K. Richmond

Contributed equally to this work with: Tracy K. Richmond, S. V. Subramanian

tracy.richmond@childrens.harvard.edu

Affiliation Division of Adolescent Medicine, Children's Hospital Boston, Boston, Massachusetts, United States of America

S. V. Subramanian

Contributed equally to this work with: Tracy K. Richmond, S. V. Subramanian

Affiliation Department of Society, Human Development, and Health (SVS), 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: TR SVS. Analyzed the data: TR SVS. Wrote the paper: TR SVS.