title: The prognostic importance of estrogen receptor level for Stage I breast cancer patients.
mesh_terms: D001943:Breast Neoplasms / Q000032:analysis*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000032:analysis; D011379:Prognosis; D011960:Receptors, Estrogen / Q000032:analysis*
chemical_list: D011960:Receptors, Estrogen