1. Obstetrics and Gynaecology Ashford and St Peter's Hospitals NHS Foundation Trust Surrey UK
2. Surgical Site Infection Surveillance Team Ashford and St Peter's Hospitals NHS Foundation Trust Surrey UK
3. Department of Quality Ashford and St Peter's Hospitals NHS Foundation Trust Surrey UK
4. School of Physiology Pharmacology and Neuroscience, University of Bristol Bristol UK
5. Department of Cardiology Ashford and St Peter's Hospitals NHS Foundation Trust Surrey UK
6. Department of Endocrinology Ashford and St Peter's Hospitals NHS Foundation Trust Surrey UK
7. Institute of Cardiovascular Research, Royal Holloway, University of London Surrey UK