8/5

Studies like this are exceedingly well,almost all projects of this kind follow the part fall apart within a decade ,because too many people following drop out of the study,or the research get the struggle or they die ad no body moves down the field. but true completion for through a combination of luck and the persistence of several generations of researcher the study has survived .

About 60 of our regional 224millions 724men are still alive, still perspating.  participating inthe study ,most of them in their 90's and we're now beginning to study 2000 children of this   these man,and I'm the 4th director of the study.

像这样的研究真的 很好 很少，几乎所有这类的研究都撑不过10年, 因为太多研究对象退出了研究, 或者研究经费用光了,或者研究者转向别的课题, 或者研究者去世了, 没有人继续推进研究.但通过运气和几代研究者的坚持, 这项研究存活下来了.原来724个人中仍然活着并仍然参与研究的有大约60人, 他们中绝大多数都已经90多岁了,我们现在已经开始研究他们超过2000个的子女.