title: Long-term use of estrogen-only hormone replacement therapy (HRT) linked with increased risk of ovarian cancer.
mesh_terms: D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D020249:Hormone Replacement Therapy / Q000009:adverse effects; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000453:epidemiology*; D017698:Postmenopause; D012307:Risk Factors; D013997:Time Factors