text_1: 在 荷兰 的 这项 多 中心 , 随机 , 对照 试验 中 , 我们 将 40 , 373 名 乳腺 X 线 筛查 结果 正常 且 乳腺 组织 极 致密 的 50 ~ 75 岁 女性 分组 , 分别 被 邀请 接受 MRI 补充 检查 , 或者 仅 接受 乳腺 X 线 筛查 .
  
text_2: in this multicenter , randomized , controlled trial in the Netherlands , we assigned 40,373 women between the ages of 50 and 75 years with extremely dense breast tissue and normal results on screening mammography to a group that was invited to undergo supplemental MRI or to a group that received mammography screening only .
  