This paper presents the administrative structure and function of population geographic information system, and discusses how the demographic-geographical integrated database established.
本文详细介绍了系统的结构、功能，并探讨了系统建设中的一些关键问题，如人口地理综合数据库的建立等。
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A longitudinal, prospective epidemiological database was used to determine the incidence and demographic risk factors for ankle sprains presenting to emergency departments in the United States.