Sources of EBM Hedges
PubMed -Clinical Query Screen:
Class Text:
How to read a paper : the basics of evidence based medicine / Trisha Greenhalgh.
“Developing optimal search strategies for detecting clinically sound studies in MEDLINE”
Haynes RB. Wilczynski N. McKibbon KA. Walker CJ. Sinclair JC.. Journal of the American Medical Informatics Association. 1(6):447-58, 1994 Nov-Dec
Cochrane Reviews, “Search strategy for identification of studies” section of each review