达特茅斯的研究者们发现，在全美每年检测出的13.8万乳腺癌案例中，乳房X光测试对其中12~13.4万遭受病痛折磨的妇女们并无帮助。
The Dartmouth researchers found that, of the estimated 138,000 breast cancers detected annually in the US, the test did not help 120,000-134,000 of the afflicted women.