Within the next two weeks, the Limits page in PubMed will be replaced with a Filters Sidebar which will appear on the left-hand side of the results page.  When a filter is selected, it will remain in operation for subsequent searches until it is cleared.

Filter categories include Publication dates, Species, Article types, Languages and more.  Once filters are selected, a “Filters activated” message will appear on the results page, above the citations list.  If you do not see a filter you are looking, such as Meta-Analysis, on the results page, it means that none of the citations you retrieved were tagged as a Meta-Analysis.

Click to see a full description of the Filters Sidebar.