About the Authors

Juan M. Gonzalez

Affiliation Perinatology Research Branch, National Institute of Child Health and Human Development (NICHD)/National Institutes of Health (NIH), Bethesda, Maryland, United States of America

Zhong Dong

Affiliation Perinatology Research Branch, National Institute of Child Health and Human Development (NICHD)/National Institutes of Health (NIH), Bethesda, Maryland, United States of America

Roberto Romero

Affiliation Perinatology Research Branch, National Institute of Child Health and Human Development (NICHD)/National Institutes of Health (NIH), Bethesda, Maryland, United States of America

Guillermina Girardi

Guillermina.Girardi@ed.ac.uk

Affiliation York College, City University of New York (CUNY), New York, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JMG GG. Performed the experiments: JMG GG ZD. Analyzed the data: JMG GG RR. Wrote the paper: JMG GG RR.