translation.en: Autopsy studies from people who died in car accidents have shown that about 40 percent of women between the ages of 40 and 50 actually have microscopic cancers in their breasts.
translation.zh: 从死于车祸的人的尸检研究中 发现大约40%的女性 在40至50岁之间 确有微型的 乳腺“肿瘤“。