1. Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California 94304, United States
2. Biionix (Bionic Materials, Implants & Interfaces) Cluster, Department of Internal Medicine, College of Medicine, University of Central Florida, Orlando, Florida 32827, United States
3. Department of Materials Science & Engineering, University of Central Florida, Orlando, Florida 32816, United States
4. Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States