1. Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
2. Oxford Centre for Diabetes, Endocrinology, and Metabolism (OCDEM), Churchill Hospital, Oxford, United Kingdom
3. Cell Isolation and Transplantation Center, Department of Surgery, Geneva University Hospital, Geneva, Switzerland
4. Department of Immunology, Genetics and Pathology, University of Uppsala, Uppsala, Sweden
5. SERVA Electrophoresis GmbH, Uetersen, Germany