1. Department of Medicine (N.Y., X.W., J.J., S.J.F.), Birmingham, Alabama 35294
2. Department of Biological Sciences (J.F.L., W.Y.C.), Clemson University, Clemson, South Carolina 29634
3. Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294
4. Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233