1. Diabetes Research Institute at Mills-Peninsula Medical Center, San Mateo, California.
2. Department of Epidemiology and Biostatistics, University of California, San Francisco School of Medicine, San Francisco, California.
3. Division of Endocrinology, Baltimore Veterans Affairs Medical Center, Baltimore, Maryland.
4. Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, Maryland.
5. Center for Diabetes Technology, University of Virginia, Charlottesville, Virginia.