1. Department of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI
2. Dietetics Program, University of Wisconsin, Madison, WI
3. College of Agriculture and Life Sciences, University of Wisconsin, Madison, WI
4. Environmental Chemistry and Technology and Wisconsin State Laboratory of Hygiene, University of Wisconsin, Madison, WI
5. USDA/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX