Letrozole therapy alone or in sequence with tamoxifen in women with breast

Big, 1 98 Collaborative Group; Mouridsen, H; Giobbe Hurder, A; Goldrisch, A; Thurlimann, B; Paridaens, R; Smith, I; Mauriac, L; Forbes, Jf; Price, Kn; Regan, Mm; Gelber, Rd; . . ., .; Grigolato, Pier Giovanni; Coates, A. S.