DATA EXTRACTION: Totally 589 relevant literatures were collected, and 20 of them were in accordance with the inclusive criteria.
资料提炼：共收集到589篇与人工膝关节置换术相关的文献，其中20篇符合纳入标准。
DATA EXTRACTION: Totally 71 relevant literatures were collected, 33 of which were accorded with the inclusive criteria, and the 38 repetitive ones or with old contents were excluded.
资料提炼：共收集到71篇相关文献，33篇文献符合纳入标准，排除的38篇文献为内容陈旧或重复。
Prices shown for DDP (Delivery Duty Paid) countries will be shown inclusive of relevant taxes and duties.
为DDP（递送责任支付）显示国家将会被显示的价格包含有关税和责任在内的。
Data EXTRACTION: a total of 752 relevant articles were collected, and 22 were in accordance with the inclusive criteria. The 730 articles were excluded because of outdated or repetitive data.
资料提炼：共收集到752篇相关文献，纳入22篇符合标准的文献，排除的730篇文献是由于内容重复。
DATA EXTRACTION: a total of 42 relevant literatures were collected, those repetitive study or similar studies were excluded, and 28 articles met the inclusive criteria.
资料提炼：共收集42篇相关文献，排除重复或类似的同一研究，28篇符合研究要求。
DATA EXTRACTION: a total of 42 relevant literatures were collected, those repetitive study or similar studies were excluded, and 28 articles met the inclusive criteria.
资料提炼：共收集42篇相关文献，排除重复或类似的同一研究，28篇符合研究要求。
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