We conducted a historical cohortstudy of consecutive indigenous birth cohorts between 1 April 1998 and 28 February 2005.
针对1998年4月1日至2005年2月28日连续出生的土著婴儿群组开展了历史群组研究。
2
Life expectancy was calculated for the studycohort, all Israelis, and the population of the Russian Federation.
对上述研究对象、所有以色列人和俄罗斯联邦人的预期寿命进行了计算。
3
Then, when I was on a sabbatical in Stockholm, I had the opportunity to get involved with the Swedish Twin Registry, a large cohortstudy in which some researchers were looking at cognition.