1. Department of Nephrology; Hospital Universitari Vall d'Hebron; Universitat Autònoma de Barcelona; Barcelona Spain
2. Department of Transplant Medicine; Oslo University Hospital, Rikshospitalet; Oslo Norway
3. School of Pharmacy; University of Oslo; Norway
4. Department of Pathology; Hospital Universitari Vall d'Hebron; Universitat Autonoma de Barcelona; Barcelona Spain
5. Department of Pathology; Oslo University Hospital; Rikshospitalet; Oslo Norway
6. Department of Radiology; Hospital Universitari Vall d'Hebron; Universitat Autonoma de Barcelona; Barcelona Spain