4Sackett DL,Straus SE, R ichardsonW S, et al. Evidence-based medicine:how to practice and teach EBM [J].2nd edition. London: Churchill Livingston, 2000:1-5. 被引量:1
5Sackett DE, Richardson WS,Rosenberg W,et M.Evidence-Based Medicine. How to practice and teach EBM [J].Edinburgh: Churchill Livingstone, 1997,1-6. 被引量:1