3RAMSEY PG,CARLINE JD,INUI TS, et al. Changes over time in the knowledge base of practicing internists [J]. JAMA, 1991,266( 8 ): 1103-1107.
4DAVIS DA,THOMSON MA,OXMAN AD,et al. Changing physician performance. A systematic review of the effect of continuing medical education strategies[J]. JAMA, 1995, 274( 9 ) :700-705.
5SACKETT DL,RICHARDSON WS,ROSENBERG W,et al. Evidence-based medicine:How to practice & teach EBM[J]. New York: Churchill Livingstone, 1997:3.