About the Authors

Dana B. Hancock

dhancock@rti.org

Affiliation Behavioral Health Epidemiology Program, Research Triangle Institute International, Research Triangle Park, North Carolina, United States of America

Joshua L. Levy

Affiliation Research Computing Division, Research Triangle Institute International, Research Triangle Park, North Carolina, United States of America

Nathan C. Gaddis

Affiliation Research Computing Division, Research Triangle Institute International, Research Triangle Park, North Carolina, United States of America

Laura J. Bierut

Affiliation Department of Psychiatry, Washington University, St. Louis, Missouri, United States of America

Nancy L. Saccone

Affiliation Department of Genetics, Washington University, St. Louis, Missouri, United States of America

Grier P. Page

Affiliation Genomics, Statistical Genetics, and Environmental Research Program, Research Triangle Institute International, Atlanta, Georgia, United States of America

Eric O. Johnson

Affiliation Behavioral Health Epidemiology Program, Research Triangle Institute International, Research Triangle Park, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DBH JLL NCG LJB NLS GPP EOJ. Performed the experiments: JLL NCG. Analyzed the data: DBH JLL NCG. Wrote the paper: DBH JLL NCG LJB NLS GPP EOJ.