1. Departments of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, Portland, Oregon, U.S.A.
2. Departments of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, Portland, Oregon, U.S.A.
3. Departments of Cell Biology and Anatomy, Oregon Health Sciences University, and Diabetes Program, Department of Veterans Affairs, Portland, Oregon, U.S.A.