1. Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
2. Centre for Clinical Research, Uppsala University, Västerås, Sweden
3. Department of Surgery, Västmanland County Hospital, Västerås, Sweden
4. Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
5. Division of Surgery and Interventional Science, University College London, London, UK
6. Breast Unit, Department of Surgery, Linköping University Hospital, Linköping, Sweden
7. Department of Surgery, Kalmar County Hospital, Kalmar, Sweden
8. Department of Surgery, University of Hong Kong, Hong Kong, University of Hong Kong-Shenzhen Hospital, Shenzhen, China, and Hong Kong Sanatorium and Hospital, Hong Kong
9. Department of Clinical Pathology, Uppsala University Hospital, Uppsala, Sweden