资料提炼：在86篇文献资料中，删除内容不同程度重复的16篇，对70篇文献进行分类整理，其中25篇作为参考文献。
DATA EXTRACTION: Among the 86 articles, 16 with repetitive contents to different degree were deleted, and the rest 70 were classified and sorted, 25 of which served as references.
资料提炼：在86篇文献资料中，删除内容不同程度重复的16篇，对70篇文献进行分类整理，其中25篇作为参考文献。
DATA EXTRACTION: Among the 86 articles, 16 with repetitive contents to different degree were deleted, and the rest 70 were classified and sorted, 25 of which served as references.
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