1. Gretchen Swanson Center for Nutrition, Omaha, Nebraska, USA
2. Department of Nutrition and Food Sciences, University of Vermont, Burlington, Vermont, USA
3. Department of Health and Human Development, Montana State University, Bozeman, Montana, USA
4. DePaul University, Chicago, Illinois, USA
5. University of Nebraska Medical Center, College of Public Health, Omaha, Nebraska, USA