ClinicalTrials.gov: Help
Tips: Basic Search
Enter words or phrases separated by commas. These may include, for example, diseases, treatments, locations, and names of researchers.
Examples:
- heart attack
- heart attack, aspirin, new york
HINT: Use Focused Search to narrow your search.
For additional information, see Help.
Search operators (all uppercase letters):
Examples:
- leukemia AND chemotherapy
- aspirin OR ibuprofen
- immunodeficiency NOT AIDS
- "heart attack"
Advanced operators: "field specification" and multi-word searches.
Examples:
- heart attack [CONDITION] AND aspirin [TREATMENT] AND (maryland OR pennsylvania) [LOCATION]
- lung cancer [CONDITION] AND "mayo clinic" [LOCATION]<BR></li>
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<p>For additional information, see Help.
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