In the M.D.Anderson study, the largest decrease in breast cancer incidence was reported among women ages 50-69 (12%) for hormone receptor-positie tumors.

• 安德森国立癌症中心的研究表明乳腺癌发病率降低最明显的是肿瘤激素受体阳性年龄在50-69岁之间的妇女（12%25）。