Prediction of risk of distant recurrence using the 21-gene recurrence score in node-negative and node-positive postmenopausal patients with breast cancer treated with anastrozole or tamoxifen: a TransATAC Study

- Dowsett, Mitch; Cuzick, Jack; Howell, Anthony; Bugarini, Roberto; Baehner, Frederick L.; Shak, Steven; Wale, Christopher; Forbes, John; Mallon, Elizabeth A.; Salter, Janine; Quinn, Emma; Dunbier, Anita; Baum, Michael; Buzdar, Aman