About the Authors

Valerie W. Hu

bcmvwh@gwumc.edu

Affiliation Department of Biochemistry and Molecular Biology, The George Washington University Medical Center, Washington, D.C., United States of America

Anjene Addington

Affiliation Child Psychiatry Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, United States of America

Alexander Hyman

Affiliation Department of Biochemistry and Molecular Biology, The George Washington University Medical Center, Washington, D.C., United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: VWH. Performed the experiments: VWH. Analyzed the data: VWH. Wrote the paper: VWH. Made suggestions and provided advice on the study, reviewed and edited the manuscript: AA. Involved in preliminary quantitative trait association analyses related to this study: AH.