Conflicts of Interest
J.M. and R.P. are researchers affiliated with the study sponsor. They did not collect or analyze data. R.B.K. has conducted funded research on nutritional supplements through grants and contracts awarded to the universities he has been affiliated, received an honorarium for making scientific presentations about dietary supplements, served as an expert on legal cases involving dietary supplements, and consulted with industry on product development unrelated to the nutrient studied in the present investigation. He has no financial or intellectual property-related conflict of interest with the study sponsor or nutrient studied. The other authors report no conflict.