Urinary phytoestrogen excretion and postmenopausal breast cancer risk: the multiethnic cohort study.
Goodman MT, Shvetsov YB, Wilkens LR, Franke AA, Le Marchand L, Kakazu KK, Nomura AM, Henderson BE, Kolonel LN. Urinary phytoestrogen excretion and postmenopausal breast cancer risk: the multiethnic cohort study. Cancer Prev Res (Phila). 2009 Oct; 2(10):887-94.