Prognostic significance of Ki-67 and topoisomerase II alpha expression in infiltrating ductal carcinoma of the breast. A multivariate analysis of 863 cases. - Rudolph,P.; MacGrogan,G.; Bonichon,F.; Frahm,SO.; Mascarel,I.; Trojani,M.; Durand,M.; Avril,A.; Coindre,JM.; Parwaresch,R. (Breast Cancer Res Treat, 1999)