Cindy D. Davis, PhD, is director of grants and extramural activities at the Office of Dietary Supplements, National Institutes of Health, Bethesda, Maryland.
The author has no conflicts of interest to disclose.
Correspondence: Cindy D. Davis, PhD, Office of Dietary Supplements, National Institutes of Health, 6100 Executive Blvd, Ste 3B01, Bethesda, MD 20892-75173 ([email protected]).