1. The Nightingale Breast Cancer Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust , Manchester , UK
2. Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester , Manchester , UK
3. Department of Oncology and Metabolism, University of Sheffield Medical School , Sheffield , UK
4. Jasmine Centre, Doncaster and Bassetlaw Teaching Hospitals NHS Trust , Doncaster , UK
5. Breast Unit, Gateshead Health NHS Foundation Trust , Gateshead , UK
6. Translational and Clinical Research Institute, Newcastle University , Newcastle upon Tyne , UK
7. Department of Medical Statistics, Wythenshawe Hospital, Manchester University NHS Foundation Trust , Manchester , UK
8. University Hospital of Derby and Burton NHS Foundation Trust, Queens Hospital , Burton upon Trent , UK
9. Breast Unit, University Hospital Crosshouse, NHS Ayrshire and Arran , Crosshouse, Kilmarnock , UK
10. Breast Unit, Rotherham NHS Foundation Trust , Rotherham , UK
11. Breast Unit, Royal Liverpool University Hospital , Liverpool , UK
12. Breast Unit, Aberdeen Royal Infirmary , Aberdeen , UK
13. National Institute for Health Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust , Bristol , UK
14. Bristol Breast Care Centre, North Bristol NHS Trust , Bristol , UK