Acknowledgements
The authors would like to express their gratitude to the USDA, Agricultural Research Service, Food Surveys Research Group, Beltsville, MD for providing access to the validated, thoroughly documented and widely used AMPM tool, which was used to collect the 24 h DR recalls in this validation study. The authors would also like to thank Alanna Moshfegh, Donna Rhodes, Melanie Hymes and Lois Steinfeldt from the USDA Food Surveys Research Group for their expert guidance in using the AMPM. Additionally, we would like to acknowledge the contributions of Julia Christensen, Dorte L. Korsbech, Marija Langwagen and Anne Frederiksen for their assistance with administering the doubly labelled water and anthropometric measurements. We also thank Amanda Cramer Nielsen, Josefine Bibi Lauridsen and Marie Torp Walther for their help with the 24 h DR telephone interviews.This research received no specific grant from any funding agency, commercial or not-for-profit sectors.K. H. Y., L. K., T. H. N., C. H., J. R. S., S. F., E. T., J. M. and T. C. contributed to the study design, and K. H. Y., L. K., T. H. N., D. M. H. and C. L. L. assisted with data collection. T. C., K. H. Y., D. M. H., C. L. L., C. H., M. M. and J. R. S. were involved in data processing, while M. M., T. C., L. K. and K. H. Y. adapted the AMPM to Danish. A. B. J. served as the principal investigator and played a role in the study design, data collection, data processing, data analysis and interpretation of findings and manuscript writing. All authors reviewed and approved the final version of the manuscript.None of the authors has any conflicts of interest to disclose.