We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleCirculating sex hormones and breast cancer risk factors in postmenopausal women: reanalysis of 13 studiesAuthorsEndogenous Hormones and Breast Cancer Collaborative GroupPublicationBritish Journal of Cancer, 2011, Vol 105, Issue 5, p709ISSN0007-0920Publication typearticleDOI10.1038/bjc.2011.254