Adjuvant radiotherapy and chemotherapy in node-positive premenopausal women with breast cancer. - Ragaz,J.; Jackson,S.M.; Le,N.; Plenderleith,I.H.; Spinelli,J.J.; Basco,V.E.; Wilson,K.S.; Knowling,M.A.; Coppin,C.M.; Paradis,M.; Coldman,A.J.; Olivotto,I.A. (N Engl J Med, 1997)