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Christopher T Sempos PhDChristopher T. Sempos, PhD, joined the Office of Dietary Supplements (ODS) at the NIH in July 2008, as Program Director for the ODS Population Studies Program. The Population Studies Program is involved in research on the risks and benefits of dietary supplements using representative population data such as the National Health and Nutrition Examination Survey (NHANES) and the National Health Interview Survey.
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March 26 2012