1. Department of Pharmacology, University of California at Davis (B.D., Y.Z., C.Z., Y.W., B.X., X.L., Y.K.X.).
2. Fraternal Order of Eagles Diabetes Research Center and Department of Medicine, University of Iowa, Iowa City (E.W., E.D.A.).
3. VA Northern California, Mather (B.X., Y.K.X.).
4. Department of Pediatrics, Indiana University School of Medicine (S.J.C.).
5. Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA (E.D.A.).