1. Department of Histopathology, Manchester Royal Infirmary, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
2. Manchester Cytology Centre, Manchester Royal Infirmary, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
3. Breakthrough Breast Cancer Research Unit, University of Manchester, Manchester, UK
4. Breast Biology Group, University of Manchester, Manchester, UK
5. Sahlgrenska Cancer Center, University of Gothenburg, Sweden