Neven, Patrick Tamoxifen Metabolism and Efficacy in Breast Cancer: A Prospective Multicenter Trial. [electronic resource] - Clinical cancer research : an official journal of the American Association for Cancer Research 05 2018 - 2312-2318 p. digital Publication Type: Clinical Trial; Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't ISSN: 1557-3265 Standard No.: 10.1158/1078-0432.CCR-17-3028 doi Subjects--Topical Terms: AgedAged, 80 and overAntineoplastic Agents, Hormonal--adverse effectsBreast Neoplasms--diagnosisDrug MonitoringFemaleHumansMiddle AgedPostmenopauseReceptors, Estrogen--metabolismSelective Estrogen Receptor Modulators--adverse effectsTamoxifen--adverse effectsTreatment Outcome