Banks, Emily2026-01-012026-01-011465-5411ORCID:/0000-0002-4617-1302/work/171153879https://hdl.handle.net/1885/733801696Whilst it is clear that women using menopausal hormone replacement therapy (HRT) are at an increased risk of breast cancer, it is uncertain whether combined oestrogen-progestogen preparations increase risk beyond that associated with oestrogen alone.enBreast cancerHormone replacement therapyOestrogenOestrogen-progestogen2000-02-0410.1186/bcr-2000-6665384974717599