https://health.universityofcalifornia.edu/research/clinical-trials/what-are-clinical-trials-and-how-do-they-work
What Are Clinical Trials and How Do They Work? | University of California Health
Clinical trials are research studies that help find new treatments. When you join a clinical trial at UCH, you can get early access to experimental options.
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https://www.alz.org/alzheimers-dementia/research-and-progress/clinical-trials/what-are-clinical-trials
What are Clinical Trials | Alzheimer's Association
Learn about clinical studies for Alzheimer's and other dementias and get started with Alzheimer’s Association TrialMatch, a free matching service.
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https://trials.modernatx.com/what-are-clinical-trials/
What are Clinical Trials
What is a Clinical Trial, Types of Clinical Trials and what are clinical trial phases. Questions and Answers about Clinical Trials, FAQ
what are clinical trials