?:authorAffiliation
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[\'Department of Obstetrics and Gynaecology, Whipps Cross University Hospital, Barts Health Trust, London, UK.\', \'Department of Obstetrics and Gynaecology, Homerton University Hospital, London, UK.\', \'Department of Obstetrics and Gynaecology, North Middlesex University Hospital, London, UK.\', \'Department of Obstetrics and Gynaecology, Royal London Hospital, Barts Health NHS Trust, London, UK.\', \'Department of Obstetrics and Gynaecology, Newham Hospital, Barts Health NHS Trust, London, UK.\', \'Statsconsultancy Ltd, Amersham, Buckinghamshire, UK.\']
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