1 Hull York Medical School, University of York, York, United Kingdom.
2 Department of Pathology, University of Cambridge, Cambridge, United Kingdom.
3 Department of Pediatric Surgery, Rangos Research Center, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, United States.
4 Islet Biology Group, Exeter Centre for Excellence in Diabetes (EXCEED), Institute of Biomedical and Clinical Sciences (IBCS), University of Exeter, Exeter, United Kingdom.
5 Section of Endocrinology, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States.
6 Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff University, Cardiff, United Kingdom.