title: What can we learn from the Million Women Study.
authors.forename: Håkan
authors.initials: H
authors.lastname: Olsson
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced*; D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D017698:Postmenopause; D012107:Research Design; D012307:Risk Factors