1. Section of Integrative Physiology and Metabolism, Research Division, Joslin Diabetes Center, Boston, MA
2. Harvard Medical School, Boston, MA
3. Dana-Farber Cancer Institute, Boston, MA
4. Cardiology Division, Beth Israel Deaconess Medical Center, Boston, MA
5. Department of Pediatrics, University of Colorado, Denver, CO
6. Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, NY