Results of two or five years of adjuvant tamoxifen correlated to steroid receptor and S-phase levels. South Sweden Breast Cancer Group, and South-East Sweden breast Cancer Group. - Ferno,M.; Stal,O.; Baldetrop,B.; Hatschek,T.; Kallstrom,A.C.; Malmstrom,P.; Nordenskjold,B.; Reyden,S. (Breast Cancer Res Treat, 2000)