The government's medical research center, the National Institutes of Health, works "to acquire new knowledge to help prevent, detect, diagnose, and treat disease and disability." The agency conducts its own research and sponsors non-federal researchers at universities and hospitals nationwide. NIH hosts the site ClinicalTrials.gov to keep the public updated on current clinical research trials. NIH oversees individual institutes and programs, such as the National Cancer Institute and the Vaccine Research Center. Research supported by NIH has led to such advances as decreased rates of heart disease and the mapping of the human genome.