对于没有保存中央人口档案的国家来说,采用新方法要困难一些。
New approaches are harder for countries that do not keep a central population register.
研究背景本研究来源于中央保健委员会专项科研课题《干部保健人群健康评估、早期预警、综合干预一体化服务体系研究》的子课题,建立保健对象电子健康档案主题数据库。
Background:This study was one of sub-project of study of integrating intervention of elderly cadre health evaluation and early warning, which was funded by central health care committee.
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