About the Authors

Jill E. Johnston

Affiliation Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Ellis Valentiner

Affiliation School of Natural Resources and Environment, University of Michigan, Ann Arbor, Michigan, United States of America

Pamela Maxson

Affiliation School of Natural Resources and Environment, University of Michigan, Ann Arbor, Michigan, United States of America

Marie Lynn Miranda

Affiliations School of Natural Resources and Environment, University of Michigan, Ann Arbor, Michigan, United States of America, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, United States of America, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan, United States of America

Rebecca C. Fry

rfry@unc.edu

Affiliation Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RF MLM. Performed the experiments: PM RF MLM. Analyzed the data: JJ EV. Wrote the paper: JJ EV.