Hypospadias — Efficacy of Amniotic Membranes in Complex Genitourinary Reconstruction
Citation(s)
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The Effect of Amniotic Membranes on Complex Genitourinary Reconstruction Outcomes in Pediatric and Adult Populations
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
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Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.