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E3N is a French prospective study of cancer risk factors—Etude Epidémiologique de femmes de la Mutuelle Générale de l’Eduction National. The study population, after exclusions, consists of 54,548 women born between 1925 and 1950, and all belong to a health insurance program that primarily covers teachers.

Postmenopausal Hormone Therapy and Breast Cancer: French Cohort Study

E3N is a French prospective study of cancer risk factorsEtude Epidémiologique de femmes de la Mutuelle Générale de lEduction National. The study population, after exclusions, consists of 54,548 women born between 1925 and 1950, and all belong to a health insurance program that primarily covers teachers.