Causes of ectopic fetation in 399 patients were retrospectively categorized and analyzed.

399例患者异位妊娠的原因被回顾性分类并分析了。

The new rule will be applied retrospectively.

新的规定将具有追溯效力。

She wrote retrospectively about her childhood.

她追述了自己的童年生活。

Retrospectively, it seems as if they probably were negligent.

回想起来，似乎他们可能是疏忽了。

Methods The clinical data was retrospectively analyzed.

方法回顾性临床资料分析。