About the Authors

Pierre R. Bushel

bushel@niehs.nih.gov

Affiliations Biostatistics Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America, Microarray and Genome Informatics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America

Ray McGovern

Affiliation Bioinformatics Core, Harvard School of Public Health, Boston, Massachusetts, United States of America

Liwen Liu

Affiliations Microarray and Genome Informatics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America, Microarray Core, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America

Oliver Hofmann

Affiliations Bioinformatics Core, Harvard School of Public Health, Boston, Massachusetts, United States of America, Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, United States of America

Ahsan Huda

Affiliations Microarray and Genome Informatics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America, SRA International Inc., Research Triangle Park, North Carolina, United States of America

Jun Lu

Affiliations Microarray and Genome Informatics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America, SRA International Inc., Research Triangle Park, North Carolina, United States of America

Winston Hide

Affiliations Bioinformatics Core, Harvard School of Public Health, Boston, Massachusetts, United States of America, Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, United States of America

Xihong Lin

Affiliation Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, United States of America

Competing Interests

Jun Lun and Ahsan Huda are employeed by SRA International Inc. as contractors for NIEHS. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Contributed intellectually to the interpretation of results: PRB OH WH XL. Conceived and designed the experiments: PRB XL. Analyzed the data: PRB RM LL AH JL. Wrote the paper: PRB.