?:authorAffiliation
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[\'Department of Obstetrics and Gynaecology, Barts Health NHS Trust, United Kingdom; Department of Women\'s and Child Health, City University London, United Kingdom. Electronic address: elizabeth.ball9@nhs.net.\', \'Department of Obstetrics and Gynaecology, Barts Health NHS Trust, United Kingdom.\', \'University College London Social Research Institute, University College London (UCL) London, United Kingdom.\', \'Department of Anaesthesia, Homerton University Hospital NHS Trust, United Kingdom.\']
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