1. Nutrition/Metabolism Laboratory, Department of Surgery, Beth Israel-Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
2. Archer Daniels Midland Company, Decatur, IL 62521
3. Department of Neurosurgery, Fuji City General Hospital, Fuji, Japan
4. The Arthur G. James Cancer Hospital and Research Institute, The Ohio State University, Comprehensive Cancer Center, Columbus, OH 43210