Clinical trials are scientific studies using human volunteers that determine the effectiveness, safety and tolerability of an intervention. Clinical trials are research studies that involve people.They recognize that people with mental illnesses sometimes need a specialized response, and they are familiar with the community-based mental health resources. In clinical trials, volunteers participate in studies of medical treatments. Phase II trial: study the effectiveness of a drug or treatment in a larger group of people. Enrollment complete, please see the results tab below. Almost half of the studies done in the clinical research unit are pediatric studies. There will be talks on each curative area in the coming months. Learn about the program, curriculum, and how to apply to the Clinical Research Internship at Mayo Clinic School of Health Sciences in Jacksonville, Florida. Many treatments used today are the results of past clinical trials.