1. Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California.
2. William Sansum Diabetes Center, Santa Barbara, California.
3. Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California.
4. Barbara Davis Center for Childhood Diabetes, University of Colorado Anschutz Medical Campus, Aurora, Colorado.
5. Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts.