About the Authors

Jennifer Southcombe

jen.southcombe@obs-gyn.ox.ac.uk

Affiliation Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Dionne Tannetta

Affiliation Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Christopher Redman

Affiliation Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Ian Sargent

Affiliation Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JS DT CR IS. Performed the experiments: JS DT. Analyzed the data: JS. Wrote the paper: JS DT CR IS.