1. Clinical leadership registrar, Brighton and Sussex University Hospitals NHS Trust, Brighton, BN2 5BE, UK
2. Consultant Obstetrician & Gynaecologist, Honorary Clinical Senior Lecturer & Associate Medical Director for Quality & Innovation, Brighton and Sussex University Hospitals NHS Trust, Brighton, BN2 5BE, UK
3. Consultant Physician, Honorary Senior Clinical Lecturer BSMS, Brighton and Sussex University Hospitals NHS Trust, Brighton, BN2 5BE, UK
4. Chief of Patient Safety, Brighton and Sussex University Hospitals NHS Trust, Brighton, BN2 5BE, UK