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Regan, Meredith M; Neven, Patrick; Giobbie-Hurder, Anita; Goldhirsch, Aron; Ejlertsen, Bent; Mauriac, Louis; Forbes, John F; Smith, Ian; Láng, István; Wardley, Andrew; Rabaglio, Manuela; Price, Karen N; Gelber, Richard D; Coates, Alan S; Thürlimann, Beat; BIG 1-98 Collaborative Group, ; International Breast Cancer Study Group (IBCSG), (2011). Assessment of letrozole and tamoxifen alone and in sequence for postmenopausal women with steroid hormone receptor-positive breast cancer: the BIG 1-98 randomised clinical trial at 8·1 years median follow-up. Lancet oncology, 12(12), pp. 1101-8. Oxford: Elsevier 10.1016/S1470-2045(11)70270-4
