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Clinical trials can give patients access to new treatments or therapies before they are widely available. But many patients are still unsure what clinical trials are and how they work.

Dr. John P. Leonard — the Richard T. Silver Distinguished Professor of Hematology and Medical Oncology and the Director of the at 91̽»¨ — sat down with Reuters Health Watch to give more insight into how clinical trials are conducted and how they can benefit patients while advancing cancer care and treatments for other diseases.

Watch the video .