1. Department of Veterans Affairs Tennessee Valley, Nashville, Tennessee;
2. Departments of 2Medicine,
3. Montreal Diabetes Research Center, Research Center of the University of Montreal Hospital Cente, and
4. Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee;
5. Metabolon, Inc., Durham, North Carolina
6. Department of Medicine, University of Montreal, Montreal, Quebec, Canada; and
7. Cell and Developmental Biology, and