Acknowledgements
The authors of this Extended Abstract acknowledge the reproduction of essential information from ‘Unmetabolized serum folic acid and its relation to folic acid intake from diet and supplements in a nationally representative sample of adults aged ≥60 years in the United States’ by Bailey RL, Mills JL, Yetley EA, Gahche JJ, Pfeiffer CM, Dwyer JT, et al. (Ref. Citation15). Thanks are due to American Journal of Clinical Nutrition for giving us permission to reproduce parts of this article.