About the Authors

Caroline Minassian, Sara L. Thomas, Oona Campbell, Liam Smeeth
Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom

David J. Williams
Institute for Women’s Health, University College London Hospital, London, United Kingdom

Corresponding Author


Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LS. Analyzed the data: CM. Wrote the paper: CM. Acquisition of data: LS CM. Interpretation of data: CM LS SLT DJW OC. Critical revision of article for important intellectual content: CM LS SLT DJW OC. Final approval of the version to be published: CM LS SLT DJW OC.