1. Department of Internal Medicine, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut
2. Diabetes Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
3. Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut
4. Department of Health Sciences, University of Technology, Sydney, New South Wales, Australia
5. Department of Cellular and Molecular Physiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut