Told by Mohammad Al-Ubaydli in this article from PLOS Medicine. Although Google medical searching has been well covered by the med bloggers I found some new tips here. There’s also good information about some of the other search engines and a caveat: handy as Google is it lacks the precision of Pub Med. Pub Med’s a must if your search has to be comprehensive, or if you need to know exactly how the search was executed. Ovid Medline works similarly but it’s not free.