啥意思？谢谢

We searched the MEDLINE database (using PubMed) and the Cochrane Library for English-language publications from January 1, 1949, through January 27, 2020, related to the evaluation of perioperative cardiovascular risk prior to noncardiac surgery. Clinical practice guidelines, randomized clinical trials, and metaanalyses of observational studies and trials were prioritized for review. Relevant references cited by identified articles were included. Included publications were mutually agreed upon by the authors and selected for clinical importance with consideration of the potential relevance for a general medical readership (eMethods in the Supplement).

我们在MEDLINE数据库（使用PubMed）和Cochrane图书馆中检索1949年1月1日至2020年1月27日期间与术前非心脏手术围术期心血管风险评估相关的英文出版物。临床实践指南、随机临床试验、观察性研究和试验的荟萃分析被优先检索回顾。被纳入的文章引用的相关参考文献也被包括在内。收录的出版物由全体作者共同同意，并根据临床重要性进行选择，同时考虑到普通医学读者的阅读偏好（副刊中的eMethods）。