1. Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO
2. Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO
3. Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, U.K.
4. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, U.K.
5. Centre of Membrane Proteins and Receptors (COMPARE), University of Birmingham and University of Nottingham, Birmingham, U.K.