1. Department of Internal Medicine, Division of Nutritional Sciences, University of Illinois College of Medicine, Urbana, IL 61801
2. Department of Pathology, Division of Nutritional Sciences, University of Illinois College of Medicine, Urbana, IL 61801
3. Department of Medical Nutrition Research and Development, Ross Products Division, Abbott Laboratories, Columbus, OH 43216
4. The Sapient's Institute, Molecular Genetics in Nutrition Program, Dallas, TX 75209