About the Authors

Fu-Jun Liu

Affiliation Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America

Aaron Barchowsky

Affiliation Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America

Patricia L. Opresko

plo4@pitt.edu

Affiliation Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FJL PLO. Performed the experiments: FJL. Analyzed the data: FJL AB PLO. Contributed reagents/materials/analysis tools: AB PLO. Wrote the paper: FJL PLO.