The SECOND tier approach is to identify articles that have been reviewed by premiere resources in evidence-based practice: articles contained in the Evidence Based Medicine Reviews (EBMR) databases.
As we have just seen, limiting your search to Randomized Controlled Trials is the FIRST tier approach for finding evidence in the biomedical journal literature.
The SECOND tier approach is to identify articles that have been reviewed by premiere resources in evidence-based practice: articles contained in the Evidence Based Medicine Reviews (EBMR) databases.