1. Diabetes Research Institute, Mills-Peninsula Medical Center, San Mateo, CA, USA
2. Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA
3. University of Cincinnati College of Medicine and Cincinnati VA Medical Center, Cincinnati, OH, USA
4. Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
5. Norfolk and Norwich University Hospital, Norwich, UK
6. University of Missouri School of Medicine, Columbia, MO, USA
7. Massachusetts General Hospital Diabetes Center and Harvard Medical School, Boston, MA, USA
8. National Institutes of Health, Bethesda, MD, USA