Boolean Operators
Boolean Operators - AND, OR, and NOT - allow combining or excluding search terms.
Always enter in uppercase letters.
|
AND
Addiction AND Opioids Retrieves citations that contain both search terms; fewer citations |
OR
Sun Exposure OR Sunlight Retrieves citations that contain either search terms; more citations |
NOT
Dementia NOT Alzheimer’s Excludes citations containing the second search term; fewer citations |
