But traditional guidelines say not to use tPA if more than three hours have passed after the first signs of a stroke.

VOA: special.2009.08.12

That you put together diseases of the heart, cancer, stroke, and then chronic respiratory diseases, those first top four are accounting for a huge number of deaths.

心脏病,癌症,中风,和慢性呼吸道疾病,这四大疾病加起来造成了大量死亡

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The trip to China would be the North Korean leader's first in four years and Mr.Kim's first trip abroad since a suspected stroke in 2008.

VOA: standard.2010.05.03