1. Department of Diabetes Complications and Metabolism, Beckman Research Institute of City of Hope , Duarte, CA 91010 , USA
2. Department of Translational Research and Cellular Therapeutics, Beckman Research Institute of City of Hope , Duarte, CA 91010 , USA
3. Diabetes and Beta Cell Biology Center, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Pittsburgh , Pittsburgh, PA 15213 , USA