Doctor Atala described the process in a talk recorded by the arts and technology group TED.

VOA: special.2010.10.19

So when we talk about a cohort study, this means taking a group of people and following them over time.

所以当我们提到定群研究,就意味着,有一群人参加实验并需一直追踪下去

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

There are two points that we talked about -the hypothetical points that came out of the small group discussions that I suggested we might think about at the beginning of this talk.

我们已经讨论了两点,其中假设性的一点,在课程刚开始时,我提出划分小组进行讨论时,就已经讲到了

耶鲁公开课 - 金融市场课程节选

If it continues, the group advises parents to talk to their child's dentist or doctor.

VOA: special.2009.03.11

We'll come back to this in our example in the cardiovascular system when we're talking about the heart and we'll talk about how to measure the collective group of action potentials using EKG's.

这个我们回头再谈,等到我们在心血管系统的例子中,说到心脏时再说,我们会谈到如何通过,心电图测量群体动作电位

耶鲁公开课 - 生物医学工程探索课程节选

For example, she says a group of students who met in her classes now get together two times a week to talk and to bead.

VOA: special.2009.05.18

Samoura Dembele heads their group. (Recording) Dembele says women in Bamako's two largest markets talk to their customers about preventing AIDS and train other market women to spread the message outside the capital.

VOA: standard.2009.10.21