1 Thirlestaine Breast Centre, Gloucestershire NHS Foundation Trust, Thirlestaine Road, Cheltenham, GL53 7AS, UK.
2 Department of Radiology, Cambridge University Hospitals NHS Foundation Trust, Addenbrookes' Hospital, Hills Road, Cambridge, CB2 0QQ, UK.
3 Cambridge Breast Unit, Cambridge University Hospitals NHS Foundation Trust, Addenbrookes' Hospital, Hills Road, Cambridge, CB2 0QQ, UK.
4 Department of Radiology, University of Cambridge School of Clinical Medicine, Box 218, Level 5, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK.
5 Breast Unit, Level 1 Chancellor Wing, St James Hospital, Beckett Street, Leeds, LS9 7TF, UK.
6 Nightingale Centre, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Southmoor Road, Manchester, M23 9LT, UK; Division of Informatics, Imaging & Data Sciences, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, UK.
8 Department of Radiology, University of Cambridge School of Clinical Medicine, Box 218, Level 5, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK. Electronic address: fjg28@cam.ac.uk.