TY - JOUR AU - Xu, X; Duncan, A M; Merz, B E; Kurzer, M S TI - Effects of soy isoflavones on estrogen and phytoestrogen metabolism in premenopausal women JO - Cancer Epidemiol Biomarkers Prev VL - 7 PY - 1998 SP - 1101 EP - 1108 ER -