About the Authors

Lori D. Hill

Affiliation Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America

Timothy P. York

Affiliations Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America, Department of Human and Molecular Genetics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America

Juan P. Kusanovic

Affiliations Perinatology Research Branch, National Institute of Child Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan, United States of America, Department of Obstetrics and Gynecology, Sótero del Río Hospital, Santiago, Chile, Department of Obstetrics and Gynecology, Pontificia Universidad Católica de Chile, Santiago, Chile

Ricardo Gomez

Affiliations Department of Obstetrics and Gynecology, Sótero del Río Hospital, Santiago, Chile, Department of Obstetrics and Gynecology, Pontificia Universidad Católica de Chile, Santiago, Chile

Lindon J. Eaves

Affiliations Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America

Roberto Romero

Affiliation Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America

Jerome F. Strauss III

jfstrauss@vcu.edu

Affiliation Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JFS LDH TPY LJE. Performed the experiments: LDH. Analyzed the data: JFS LDH TPY. Contributed reagents/materials/analysis tools: JPK RG RR. Wrote the paper: LDH TPY JPK RG LJE RR JFS.