1. Academic Clinical Fellow and ST2 trainee in Obstetrics and Gynaecology, Department of Obstetrics and Gynaecology Rosie Hospital Cambridge CB2 0QQ UK
2. Consultant Colorectal Surgeon, Royal Devon and Exeter NHS Foundation Trust and Honorary Associate Professor, University of Exeter Medical School Exeter Surgical Health Services Research Unit (HeSRU), Royal Devon and Exeter Hospital Exeter EX2 5DW UK
3. Consultant Colorectal Surgeon, Royal Devon and Exeter Hospital NHS Foundation Trust and Honorary Clinical Senior Lecturer, University of Exeter Medical School Exeter Surgical Health Services Research Unit (HeSRU), Royal Devon and Exeter Hospital Exeter EX2 5DW UK