1. Liverpool Breast Unit, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
2. Department of Breast Surgery, Royal Marsden NHS Foundation Trust, Sutton, UK
3. Centre for Public Health, Queen’s University Belfast, Institute of Clinical Science, Belfast, UK
4. Department of Oncology, University of Cambridge, Cambridge, UK
5. Cancer Sciences Academic Unit, Faculty of Medicine, University of Southampton and University Hospital Southampton, Southampton, UK
6. Nightingale Breast Cancer Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
7. Department of Plastic Surgery, Wexham Park Hospital, Frimley Health NHS Foundation Trust, Slough, UK
8. Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
9. Northern Ireland Cancer Research Consumer Forum, Northern Ireland Cancer Trials Network, Belfast City Hospital, Belfast, UK
10. Guy’s Cancer Centre, Guy’s and St Thomas’ NHS Trust, London, UK
11. School of Cancer and Pharmaceutical Sciences, King’s College London, London, UK
12. Breast Surgery Department, Belfast City Hospital, Belfast Health and Social Care Trust, Belfast, UK
13. Department of Medical Oncology, Christie Hospital NHS Foundation Trust, Manchester, UK
14. School of Medical Sciences Faculty of Biology, Medicine and Health University of Manchester, Manchester, UK
15. University of Liverpool, Institute of Systems, Molecular and Integrative Biology, Department of Molecular and Clinical Cancer Medicine, Liverpool, UK
16. Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, UK
17. Department of Pathology, Queen Elizabeth Hospital Birmingham and University of Birmingham, Birmingham, UK
18. Breast Unit, St James’s Hospital, Leeds, UK
19. Surrey and Sussex Healthcare NHS Trust, East Surrey Hospital, Redhill, UK
20. Bristol Centre for Surgical Research, Population Health Sciences, Bristol Medical School, Bristol, UK
21. Bristol Breast Care Centre, North Bristol NHS Trust, Southmead Hospital, Bristol, UK
22. Patrick G Johnston Centre for Cancer Research, Queen’s University Belfast, Belfast, UK