The good news is that progress against cancer has been made on many fronts,says Susan Gapstur, vice president of Epidemiology at the American Cancer Society and co-author of a commentary in the journal.

VOA: standard.2010.03.25

One are epidemiology studies and then the second are intervention studies.

一种是流行病学研究,另一种是干预性研究

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now several lectures down the road we'll talk about modern food and epidemiology; that is what the research on food intake and human health, and what do we know about our health and well-being based on diets.

接下来的几堂课,我们将讨论现代食品和流行病学的关系,即食品摄入与人类健康方面的研究,我们通过饮食来了解自身健康状况

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选