1. Bureau of Nutritional Sciences, Health Canada, Ottawa, Canada
2. Department of Public Health Sciences, Loyola University of Chicago Stritch School of Medicine, Chicago, IL
3. Department of Health Research and Policy, Stanford University School of Medicine, Palo Alto, CA
4. Biomolecular Measurement Division
5. Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD
6. NIH, Office of Dietary Supplements, Bethesda, MD
7. Statistics Canada, Ottawa, Canada