PARIS--(BUSINESS WIRE)--Guidelines from the 2007 St Gallen International Expert Consensus on the Primary Therapy of Early Breast Cancer, published today in the Annals of Oncology (http://annonc.oxfordjournals.org), confirm the value of switching from tamoxifen to an aromatase inhibitor (AI), such as exemestane, for the adjuvant treatment of postmenopausal women with hormone receptor positive early breast cancer.i
