Beral, ValerieBull, DianaPirie, KirstinReeves, Gillian KMillion Women Study, CollaboratorsBanks, Emily2015-12-131470-2045http://hdl.handle.net/1885/72209Background Menarche and menopause mark the onset and cessation, respectively, of ovarian activity associated with reproduction, and affect breast cancer risk. Our aim was to assess the strengths of their effects and determine whether they depend on characKeywords: contraceptive agent; estrogen receptor; adult; age distribution; aged; alcohol consumption; article; breast cancer; cancer classification; cancer patient; cancer risk; controlled study; disease association; female; histology; hormonal therapy; human; hystMenarche, menopause, and breast cancer risk: individual participant meta-analysis, including 118 964 women with breast cancer from 117 epidemiological studies201210.1016/S1470-2045(12)70425-42016-02-24