About the Authors

Robert H. Lim

rlim@hsph.harvard.edu (RHL); lkobzik@hsph.harvard.edu (LK)

Affiliations Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America, Division of Respiratory Diseases, Children's Hospital Boston, Boston, Massachusetts, United States of America

Lester Kobzik

rlim@hsph.harvard.edu (RHL); lkobzik@hsph.harvard.edu (LK)

Affiliations Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America, Department of Pathology, Brigham & Women's Hospital, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RHL LK. Performed the experiments: RHL. Analyzed the data: RHL. Contributed reagents/materials/analysis tools: LK. Wrote the paper: RHL.