1. Diabetes Research Institute 1450 NW 10th Avenue Miami FL 33136 USA
2. Department of Biomedical EngineeringUniversity of Miami 1251 Memorial Drive Coral Gables FL‐33146 USA
3. Department of Electronics, Information and Bioengineering Politecnico di Milano20133 Milan Italy
4. Department of SurgeryUniversity of Miami Miller School of Medicine Miami FL‐33136 USA