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has the review been done before
Before beginning, make sure a review has not already addressed your question.
Do a thorough search in the following databases; you can also consult your librarian for guidance. Make sure you check for both published reviews and registered protocols (to see if a review is in progress).
►Note when using PubMed to search for systematic reviews, you can filter your search. The National Library of Medicine provides more details; you can also contact your librarian for assistance.
The Joanna Briggs Institute should also be searched for reviews that have been done or are in process. Gumberg does not currently provide access; contact your librarian for assistance.