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If you link to this site, provide proper attribution to the U.S. National Library of Medicine (NLM) and ClinicalTrials.gov. It must be clear to users that data and searches are being provided by ClinicalTrials.gov. Use only real-time data provided directly by ClinicalTrials.gov to ensure that the most up-to-date and accurate information is provided to the public.
ClinicalTrials.gov provides patients, family members, and members of the public easy and free access to information on clinical studies for a wide range of diseases and conditions.
Links to individual search fields can be constructed, as shown below. For any multiword search terms (e.g. alzheimer disease), spaces must be replaced with a "+" character. Unusual characters must be URL encoded.
Linking to diabetes studies in ClinicalTrials.gov
For a multiword term that should be treated as a phrase, the spaces must be replaced with "+" characters and the entire phrase enclosed in quotes, which are URL encoded as %22. For example,
Linking to lyme disease studies in ClinicalTrials.gov
Linking to fluoxetine studies in ClinicalTrials.gov
Linking to clinical studies sponsored by NHLBI in ClinicalTrials.gov
You may show a specific study protocol record based on NCT number. The NCT number is NLM's unique identifier for a particular record and is found at the end of each record.
The XML for an individual protocol record may be obtained by appending a URL parameter "displayxml=true" to the end of a study display URL.
A zip file containing a set of protocols in XML format may be obtained by appending a URL parameter "studyxml=true" to the end of search request URL.
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