Abstract：
Critically appraising the literature is the third step in the evidence-based practice process. The lowest level of evidence includes expert opinion and related types of literature. This column describes the appraisal of this type of literature using a specific set of questions.
摘要：
批判性地评估文献是基于证据的实践过程的第三步。最低级别的证据包括专家意见和相关类型的文献。本专栏使用一组特定的问题来描述对此类文献的评估。
