Effect of soy phytoestrogens on hot flashes in postmenopausal women with breast cancer: a randomized, controlled clinical trial. - van Patten,C.L.; Olivotto,I.A.; Chambers,G.K.; Gelmon,K.A.; Hislop,T.G.; Templeton,E.; Wattie,A.; Prior,J.C. (J Clin Oncol, 2002)