1. Epidemiology Research Unit; Centre Hospitalier de l'Université de Montreal (CRCHUM) Hotel-Dieu; Montreal Quebec Canada
2. Department of Surgery, Scotia Chair in Breast Cancer Diagnosis and Treatment, Breast Cancer Centre, CHUM; University of Montreal; Montreal Quebec Canada
3. Department of Surgery, Hotel-Dieu de Montreal; University of Montreal Hospital; Montreal Quebec Canada
4. Familial Breast Cancer Research; Women's College Hospital Research Institute; Toronto Ontario Canada