1. Department of Obstetrics and Gynaecology North Middlesex University Hospital London N18 1QX UK
2. Department of Obstetrics and Gynaecology Homerton University Hospital London E9 6SR UK
3. Department of Obstetrics and Gynaecology Royal Free NHS Foundation Trust London NW3 2QG UK
4. DocHealth BMA House London WC1H 9JP UK