1. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA;
2. Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark;
3. Department of Surgery, College of Medicine at The University of Vermont, Burlington, VT, USA;
4. Institute of Pathology, Aarhus University Hospital, Aarhus, Denmark;
5. Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark;
6. Department of Clinical Research, University of Southern Denmark, Odense, Denmark;
7. Breast Unit, Aarhus Denmark and on behalf of the Danish Breast Cancer Group, Aarhus University Hospital/Randers Regional Hospital, Aarhus, Denmark