About the Authors

Chad M. Thompson

cthompson@toxstrategies.com

Affiliation ToxStrategies, Katy, Texas, United States of America

Yuriy Fedorov

Affiliation Thermo Fisher Scientific, Pittsburgh, Pennsylvania, United States of America

Daniel D. Brown

Affiliation Thermo Fisher Scientific, Pittsburgh, Pennsylvania, United States of America

Mina Suh

Affiliation ToxStrategies, Austin, Texas, United States of America

Deborah M. Proctor

Affiliation ToxStrategies, Austin, Texas, United States of America

Liz Kuriakose

Affiliation ToxStrategies, Katy, Texas, United States of America

Laurie C. Haws

Affiliation ToxStrategies, Rancho Santa Margarita, California, United States of America

Mark A. Harris

Affiliation ToxStrategies, Katy, Texas, United States of America

Competing Interests

YF and DDB were formerly employed by Thermo Fisher Scientific, which provided materials used in this study. All other authors are employed by ToxStrategies, Inc., which provides consultancy to industrial and governmental organizations. Additionally, this work was funded by The Hexavalent Chromium Panel of the American Chemistry Council. This does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: CMT YF DMP LCH MAH. Performed the experiments: YF DDB. Analyzed the data: CMT YF DDB LK. Contributed reagents/materials/analysis tools: YF DDB. Wrote the paper: CMT YF MS DMP LCH MAH.