Aromatase inhibitors versus tamoxifen in early breast cancer: patient-level meta-analysis of the randomised trials

Early Breast Cancer Trialists' Collaborative Group (EBCTCG), Kaufmann M, Kilburn L, Perrone F, Rea D, Thürlimann B, van de Velde C, Pan H, Peto R, Davies C, Gnant M, Dubsky P, Cuzick J, Dowsett M, Forbes J, Bradley R, Ingle J, Aihara T, Bliss J, Boccardo F, Coates A, Coombes R, Gray R. Aromatase inhibitors versus tamoxifen in early breast cancer: patient-level meta-analysis of the randomised trials. Lancet 2015; 386:1341-52.