Search clinical trials by sponsor/organization.
This tool allows you to search for clinical trials based on a list of sponsor organizations.
Input:
- `sponsors`: A list of strings, where each string is a sponsor organization to search for.
The search will find trials sponsored by any of the specified organizations.
Example: `['National Cancer Institute', 'Pfizer']`
- `max_studies`: The maximum number of studies to return. Defaults to 50.
- `fields`: A list of specific fields to return in the results. If not provided, returns
SEARCH_TOOL_DEFAULTS (9 essential fields: NCTId, BriefTitle, Acronym, Condition,
Phase, InterventionName, LeadSponsorName, OverallStatus, HasResults).
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