Study Design. Comparative knowledge survey.
研究设计：知识的对比调查。
DESIGN: Observation of comparative experiment.
设计：观察性对比实验。
Evidence-based health policy research and comparative health systems design;
循证健康策略研究和比较健康系统设计；
Evidence-based health policy research and comparative health systems design;
循证健康策略研究和比较健康系统设计；
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