北卡罗来纳州杜克大学人口统计学家肯尼斯·曼顿说：“这确实引发了一个问题，即什么是正常的老龄化。”
"It really raises the question of what should be considered normal ageing," says Kenneth Manton, a demographer from Duke University in North Carolina.
2006年，北卡罗来纳州达勒姆市杜克大学的阿尼尔·波提、约瑟夫·奈文斯及其同事受到广泛关注。
ANIL POTTI, Joseph Nevins and their colleagues at Duke University in Durham, North Carolina, garnered widespread attention in 2006.
例如北卡罗来纳州的杜克大学和位于休斯顿的赖斯大学等大学正在不断拿出更多钱作为奖学金。
Universities such as Duke in North Carolina and Rice in Houston are devoting more money to scholarships.
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