1. Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76706, United States
2. Institute of Biomedical Studies, Baylor University, Waco, Texas 76706, United States
3. Islet Cell Laboratory, Baylor Scott and White Research Institute, Dallas, Texas 75204, United States
4. Baylor Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas 75204, United States