然而，直到2009年第一篇关于筛查效果的有说服力的随机对照研究文章才被发表。

However, the first valid reports from randomized controlled trials on the efficacy of screening were not published until 2009.

youdao

然而，直到2009年第一篇关于筛查效果的有说服力的随机对照研究文章才被发表。

However, the first valid reports from randomized controlled trials on the efficacy of screening were not published until 2009.

youdao