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Meta-analysis of breast cancer outcomes in adjuvant trials of aromatase inhibitors versus tamoxifen by Dowsett, M, Cuzick, J, Ingle, J, Coates, A, Forbes, J, Bliss, J, Buyse, M, Baum, M, Buzdar, A, Colleoni, M, Coombes, C, Snowdon, C, Gnant, M, Jakesz, R, Kaufmann, M, Boccardo, F, Godwin, J, Davies, C, Peto, R