1. Centre for Endocrinology, Diabetes, and Metabolism (N.M.S., M.S., E.A.W., P.M.S., G.G.L.), School of Clinical and Experimental Medicine, University of Birmingham, Birmingham B15 2TT, United Kingdom
2. Department of Cell Biology and Physiology (P.J.), Magee-Women’s Research Institute, Pittsburgh, Pennsylvania 15213
3. Department of Internal Medicine (K.L.P.), University of Texas Southwestern Medical Center, Dallas, Texas 75390