Adjuvant sequencing of tamoxifen and anastrozole is superior to tamoxifen alone in postmenopausal women with low proliferating breast cancer.

Bago-Horvath Z, Rudas M, Dubsky P, Jakesz R, Singer CF, Kemmerling R, Greil R, Jelen A, Böhm G, Jasarevic Z, Haid A, Gruber C, Pöstlberger S, Filipits M, Gnant M

http://www.ncbi.nlm.nih.gov/pubmed/21998336