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。
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.
本研究通过对美国急诊科收治的踝关节扭伤患者的流行病学资料进行纵向、前瞻性研究，以确定踝关节扭伤的发病率及与人口统计学相关的危险因素。
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.
本研究通过对美国急诊科收治的踝关节扭伤患者的流行病学资料进行纵向、前瞻性研究，以确定踝关节扭伤的发病率及与人口统计学相关的危险因素。
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