We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleACP Journal Club. Estrogen plus progestin increased long-term risk for invasive breast cancer in postmenopausal women.AuthorsKauffman, Robert PPublicationAnnals of internal medicine, 2011, Vol 154, Issue 4, pJC2ISSN1539-3704Publication typeJournal ArticleDOI10.7326/0003-4819-154-4-201102150-02011