1. Department of Surgical Pathology, Zealand University Hospital, Roskilde, Denmark
2. Department of Pathology, Herlev and Gentofte Hospital, Herlev, Denmark
3. Department of Oncology, Odense University Hospital, Funen, Denmark
4. Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
5. Danish Breast Cancer Group, Copenhagen University Hospital, Copenhagen, Denmark