About the Authors
- Olaa Mohamed-Ahmed
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* E-mail: olaa.mohamed-ahmed@npeu.ox.ac.uk
Affiliation National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, United Kingdom
- Cathy Nelson-Piercy
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Affiliations Division of Women’s Health, King’s College London, Women’s Health Academic Centre, King’s Health Partners, United Kingdom, Obstetric Medicine, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- Kate Bramham
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Affiliation Division of Women’s Health, King’s College London, Women’s Health Academic Centre, King’s Health Partners, United Kingdom
- Haiyan Gao
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Affiliation National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, United Kingdom
- Jennifer J. Kurinczuk
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Affiliation National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, United Kingdom
- Peter Brocklehurst
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Affiliation Institute for Women’s Health, University College London, United Kingdom
- Marian Knight
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Affiliation National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, United Kingdom
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: CNP JJK PB MK. Analyzed the data: OMA. Wrote the paper: OMA. Contributed to writing the manuscript: CNP KB HG JJK PB MK. Contributed to the analysis: JJK MK HG.