有乳腺癌相关家族史或有其他危险因素暴露史的女性有更高的风险患乳腺癌。应询问自己的医生开始进行乳腺癌筛查的时间和可能增测的项目。
Women who are at higher risk of breast cancer because of family history or other factors should talk to their doctor about when to start screening and what other tests they may need.
遗传筛查为妇女提供了一个希望，那就是让她们更好的了解自己患上乳腺癌的几率。
For women, genetic screening offers the hope of better understanding the likelihood that they'll develop breast cancer.
四项是同龄组研究，也就是说研究开始时对一个健康人群做遗传筛查，然后观测其后的15年他们中哪些人会患上乳腺癌，哪些人不会。
Four were cohort studies in which a healthy population was genetically screened at the outset and followed for 15 years to see who developed breast cancer and who did not.
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