1. Department of Pathology; University of Maryland School of Medicine; Baltimore MD
2. Division of Transplantation Pathology, Department of Pathology, The Thomas E Starzl Transplantation Institute; University of Pittsburgh; Pennsylvania PA
3. Department of Microbiology and Infection Control; University Hospital of North Norway; Tromsø Norway
4. Metabolic and Renal Research Group, UiT; The Arctic University of Norway; Tromsø Norway
5. Transplantation and Clinical Virology, Department of Biomedicine; University of Basel; Basel Switzerland
6. Infectious Diseases and Hospital Epidemiology; University Hospital Basel; Basel Switzerland