An error occurred during the publication of a number of articles in BMC Rheumatology. Several articles were published in volume 3 with a duplicate citation number.

中文翻译：

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出版商更正至：BMC 风湿病学，第 3 卷

BMC Rheumatology 发表多篇文章时出现错误。在第 3 卷中发表了几篇文章，引用编号重复。