METHODS Systemic review and cost effectiveness analysis were employed.
方法系统综述、成本效果分析。
METHODS We collected all of related literatures in Chinese Biological Medicine Digest (CBMD) from 1987 to 1999. Then systematic review, cost effectiveness and sensitivity analysis were employed.
方法收集中国生物医学文摘（CBMD） 1987/1999的所有相关文献，进行系统综述、成本效益和灵敏度分析。
METHODS We collected all of related literatures in Chinese Biological Medicine Digest (CBMD) from 1987 to 1999. Then systematic review, cost effectiveness and sensitivity analysis were employed.
方法收集中国生物医学文摘（CBMD） 1987/1999的所有相关文献，进行系统综述、成本效益和灵敏度分析。
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