pubmed

NLM produces a baseline set of MEDLINE/PubMed citation records in XML format for download on an annual basis. The annual baseline is released in December of each year. Each day, NLM produces update files that include new, revised and deleted citations. See our documentation page for more information.

国家医学图书馆（NLM）每年定期发布一套基于MEDLINE/PubMed的引文记录，以XML格式提供下载。该年度基线版本于每年的十二月发布。每日，NLM会生成包含新增、修订及删除引文的更新文件。有关详细信息，请参阅我们的文档页面。