1. Pharmacology and Pharmaceutical Sciences; School of Pharmacy; University of Southern California; Los Angeles CA 90089 USA
2. Department of Biochemistry; Keck School of Medicine; University of Southern California; Los Angeles CA 90033 USA
3. Islet Transplant Center; City of Hope; Duarte CA 91010 USA
4. Department of Pathology; Keck School of Medicine; University of Southern California; Los Angeles CA 90033 USA