PICO is a novel approach of allowing users to conduct a focussed search based on a structured clinical question Learn more at cebm.net
There are 4 elements and not all are compulsory, but the more you use the more focussed the results. We use a contingency search to reduce information overload, click here for further details.
MedPageToday, 2012
MedPage Today® surveys are polls of those who choose to participate and are, therefore, not valid statistical samples, but rather a snapshot of what your colleagues are thinkingIn association with 
