1. Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232-0615
2. Department of Human Biology and Nutritional Sciences, University of Guelph, Guelph, ON, Canada N1G 2W1
3. Diabetes Research and Training Center, Vanderbilt University School of Medicine, Nashville, TN 37232-0615
4. Department of Surgery, Vanderbilt University School of Medicine, Nashville, TN 37232-0615