首页>美国卫生研究院文献>The Cochrane Database of Systematic Reviews
【机译】:系统评价的科克伦数据库
数据库引入:Cochrane library (Online)
MeSH词表主题词:Evidence-Based Medicine; Randomized Controlled Trials as Topic; Research Design; Research*
备注:Each issue cumulates all previous issues. Description based on: 1999, issue 4展开▼