方法前瞻性方法，结合文献综述、过程分析、统计学和计算机网络技术等。
Methods A perspective method, together with literature summary, process analysis, statistics and computer network techniques, was employed.
研究设计：对II型齿状突骨折老年病例系列进行回顾性研究，对其功能随访采用前瞻性方法。
Study Design. Retrospective case series of elderly patients with Type II odontoid fractures, with prospective functional follow-up.
前瞻性人口和健康群组是评估儿童死亡率和其他人口指标的最准确方法。
Prospective demographic and health cohorts are the most accurate method to assess child mortality and other demographic indices.
应用推荐