1. Section of Nutrition, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
2. Department of Food Sciences and Human Nutrition, Colorado State University, Fort Collins, CO, USA.
3. Department of Health and Exercise Science, Colorado State University, Fort Collins, CO, USA.
4. Colorado School of Public Health, Fort Collins, CO, USA.
5. Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA.