Use the symbols below to refine your search
SymbolExplanation
No symbol At least one of the keywords must be present
Search example: serious adverse event
Result: Will contain serious and/or adverse and/or event
+ Leading plus sign indicates that the word must be present
Search example: serious +adverse event
Result: Will contain adverse and may contain serious and/or event
- Leading minus sign indicates that the word must not be present
Search example: serious adverse -event
Result: Will contain serious and/or adverse but won’t contain event
“ ” Exact phrase must be present
Search example: “serious adverse event”
Result: Will contain the phrase serious adverse event