1. Department of Medicine, Endocrinology, Diabetes & Metabolism, Baylor College of Medicine, Houston, Texas, USA
2. Institute of Molecular Medicine, McGovern Medical School, The University of Texas Health Science Center, Houston, Texas, USA
3. Barbara Davis Center for Childhood Diabetes, University of Colorado Denver, Aurora, Colorado, USA
4. Department of Immunology and Microbiology, School of Medicine, University of Colorado Denver, Aurora, Colorado, USA
5. Department of Biomedical Research, National Jewish Health, Denver, Colorado, USA