TrialThe Lancet. Oncology2011

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.

Meredith M Regan et al.PubMed ↗Full text ↗Publisher ↗

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