Breast 4 Breast Neoplasms Cancer 4 Chemotherapy drug therapy Aromatase 2 Aromatase Inhibitors 2 Gehiago ... Therapeutic use 2 therapeutic use 2 Antagonists 1 Antineoplastic Agents 1 Drug Resistance, Neoplasm 1 Drug resistance in cancer cells 1 Endometriosis 1 Estrogen 1 Inhibitors 1 Neoplasms, Hormone-Dependent 1 Ovaries 1 Popular works 1 pharmacology 1 physiology 1 gutxiago ...