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Orphan drug - Wikipedia
Designating an Orphan Product: Drugs and Biological Products
Orphan Drug Designation: Disease Considerations | FDA
What is an orphan drug? - Drugs.com
Rare Diseases at FDA | FDA - U.S. Food and Drug Administration
What is an Orphan Drug? A Guide to Rare Disease Therapies
Orphan Drug Act of 1983 - Wikipedia
What is an orphan drug? - Johnson & Johnson
Orphan Drug Approval Laws - StatPearls - NCBI Bookshelf
Definition of orphan drug - NCI Dictionary of Cancer Terms