Menopausal hormone therapy and breast cancer risk in the NIH-AARP Diet and Health Study Cohort.

Abstract

BACKGROUND Results from the Women's Health Initiative trial raise new questions regarding the effects of estrogen therapy (ET) and estrogen plus progestin therapy (EPT) on breast cancer risk. METHODS We analyzed data from 126,638 females, ages 50 to 71 years at baseline, who completed two questionnaires (1995--1996 and 1996--1997) as part of the NIH-AARP… (More)
DOI: 10.1158/1055-9965.EPI-08-0435

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