KU Leuven - Department of Microbiology, Immunology and Transplantation, Imperial College, Faculty Medicine, Dept Immunology and Inflammation, Mayo Clinic - Department of Laboratory Medicine and Pathology, Cedars-Sinai Medical Center - Department of Pathology and Laboratory Medicine, University of Nebraska Medical Center - Division of Nephrology, University of Texas Medical Branch-Galveston - Department of Pathology, Yeshiva University - Montefiore Medical Center, Johns Hopkins University - Department of Medicine, Mayo Clinic, Johns Hopkins University - Department of Pathology, Columbia University - Department of Pathology, Medical University of Vienna - Division of Nephrology and Dialysis, RWTH Aachen University Hospital - Institute of Pathology, University of Gothenburg - Department of Clinical Pathology, University of Chicago, Erasmus University Rotterdam (EUR) - Department of Clinical Bioinformatics, Arkana Laboratories - Department of Transplant Translational Research, Harvard University - Massachusetts General Hospital, Weill Cornell Medical College - Division of Nephrology and Hypertension, - Department of Pathology, Assistance Publique-Hopitaux de Paris (AP-HP), Emory University - Department of Pathology and Laboratory Medicine, Vanderbilt University - Department of Pathology, Microbiology and Immunology, The Voice of the Patient, University of Manitoba - Department of Pathology, Paris Expertise Centre for Organ Transplantation at Paris Cardiovascular Research Center (PARCC), Cedars-Sinai Medical Center - Division of Nephrology, Columbia University - Division of Nephrology, Duke University - Medical Center, Leiden University, Medical Center (LUMC), Department of Pathology, Medical University of Vienna - Department of Urology, Medical University of Vienna - Department of Pathology, Oregon Health and Science University, Ludwig Maximillian University Munich - Nephrology Center, University of Paris - Saint Louis Hospital, Weill Cornell Medical College - Division of Nephrology and Hypertension, Westmead Hospital - Department of Renal Medicine, University Hospitals Birmingham NHS Foundation Trust, University of Pittsburgh - Thomas E. Starzl Transplant Institute, Necker-Enfants Malades Hospital - Department of Pathology, Harvard University - Massachusetts General Hospital, Harvard University - Massachusetts General Hospital, University of Montreal - Maisonneuve-Rosemont Hospital, McGill University - Division of Nephrology & Multi-Organ Transplant Program, University Hospital Zurich, Mayo Clinic - Division of Nephrology and Hypertension, Weill Cornell Medical College - Division of Renal Pathology, University Hospitals Birmingham NHS Foundation Trust, University of Alberta - Department of Laboratory Medicine and Pathology, University of Claude Bernard Lyon 1 - CIRI, Radboud University Nijmegen - Radboud University Medical Center, Hospital Clinic of Barcelona - Nephrology Department, Imperial College London, Université Paris Cité - Department of Nephrology and Transplantation, Paris Expertise Centre for Organ Transplantation at Paris Cardiovascular Research Center (PARCC) and University of Alberta - Department of Laboratory Medicine and Pathology

Imperial College, Faculty Medicine, Dept Immunology and Inflammation, KU Leuven - Department of Microbiology, Immunology and Transplantation, Harvard University - Massachusetts General Hospital, Cedars-Sinai Medical Center - Department of Pathology and Laboratory Medicine, Université Paris Cité - Department of Nephrology and Transplantation, University of Nebraska Medical Center - Division of Nephrology, University of Texas Medical Branch-Galveston - Department of Pathology, Johns Hopkins University - Department of Medicine, Assistance Publique-Hôpitaux de Paris - Department of Kidney Transplantation, Johns Hopkins University - Department of Pathology, Columbia University - Department of Pathology, University of Edinburgh - Centre for Inflammation Research, University of Gothenburg - Department of Clinical Pathology, Charité - Universitätsmedizin Berlin - Department of Nephrology and Medical Intensive Care, Erasmus University Rotterdam (EUR) - Department of Clinical Bioinformatics, Arkana Laboratories - Department of Transplant Translational Research, Mayo Clinic - Department of Laboratory Medicine and Pathology, Weill Cornell Medical College - Division of Nephrology and Hypertension, University of Pittsburgh - Department of Hepatic and Transplantation Pathology, University of Göttingen - Department of Nephrology and Rheumatology, Emory University - Department of Pathology and Laboratory Medicine, Vanderbilt University - Department of Pathology, Microbiology and Immunology, Northwestern University - Feinberg School of Medicine, University of Manitoba - Department of Pathology, Guy's and St Thomas' NHS Foundation Trust, Columbia University - Division of Nephrology, Cedars-Sinai Medical Center - Division of Nephrology, Duke University - Medical Center, Leiden University, Medical Center (LUMC), Department of Pathology, Medical University of Vienna - Department of Urology, Critical Path Institute (C-Path), Medical University of Vienna - Department of Pathology, Ludwig Maximillian University Munich - Nephrology Center, New York University (NYU) - NYU Langone Transplant Institute, NYU Langone Transplant Institute, Westmead Hospital - Department of Renal Medicine, University Hospitals Birmingham NHS Foundation Trust, University of Manitoba - Department of Immunology, Necker-Enfants Malades Hospital - Department of Pathology, University of Pittsburgh - Thomas E. Starzl Transplant Institute, Harvard University - Massachusetts General Hospital, Harvard University - Massachusetts General Hospital, University of Montreal - Maisonneuve-Rosemont Hospital, McGill University - Division of Nephrology & Multi-Organ Transplant Program, University of Florida - Department of Medicine-Quantitative Health, University of San Francisco, Mayo Clinic - Division of Nephrology and Hypertension, Mayo Clinic - Division of Transplantation Surgery, University of Alberta - Department of Laboratory Medicine and Pathology, Radboud University Nijmegen - Radboud University Medical Center, University of Manitoba - Department of Immunology, Paris Expertise Centre for Organ Transplantation at Paris Cardiovascular Research Center (PARCC) and University of Alberta - Department of Laboratory Medicine and Pathology

University of Cambridge - Department of Surgery, University College London - University College London Medical School, University Hospitals Birmingham NHS Foundation Trust, University of Birmingham, NHS Blood and Transplant Clinical Trials Unit, NHS Blood and Transplant Clinical Trials Unit, NHS Blood and Transplant Clinical Trials Unit, NHS Blood and Transplant Clinical Trials Unit, NHS Blood and Transplant Clinical Trials Unit, Intensive Care National Audit and Research Centre, NHS Blood and Transplant Clinical Trials Unit, NHS Blood and Transplant Clinical Trials Unit, NHS Foundation Trust - Cambridge University Hospitals, NHS Foundation Trust - Cambridge University Hospitals, NHS Foundation Trust - Cambridge University Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, University of Birmingham, Imperial College, Faculty Medicine, Dept Immunology and Inflammation, Guy’s and St Thomas’ NHS Foundation Trust, Government of the United Kingdom - Barts Health NHS Trust, Government of the United Kingdom - Portsmouth Hospitals University NHS Trust, University of Birmingham, NHS Foundation Trust - Cambridge University Hospitals, University Hospitals Coventry and Warwickshire, Government of the United Kingdom - North Bristol NHS Trust, Guy’s and St Thomas’ NHS Foundation Trust, Independent, Imperial College London, Nottingham University Hospitals NHS Trust, University Hospitals of Leicester NHS Trust, Newcastle University, Liverpool University Hospitals NHS Foundation Trust, Leeds Teaching Hospitals NHS Trust, Leeds Teaching Hospitals NHS Trust, University Hospitals Birmingham NHS Foundation Trust, University of Oxford - Nuffield Department of Surgical Sciences, Royal Infirmary of Edinburgh, University of Edinburgh, University Hospitals Coventry and Warwickshire, University Hospitals Coventry and Warwickshire, Cardiff and Vale University Health Board, University of Oxford - Nuffield Department of Surgical Sciences, Government of the United Kingdom - Queen Elizabeth University Hospital, Government of the United Kingdom - Queen Elizabeth University Hospital, Government of the United Kingdom - North Bristol NHS Trust, The University of Manchester - Manchester University NHS Foundation Trust, St George's University Hospitals NHS Foundation Trust, Government of the United Kingdom - Barts Health NHS Trust, University College London, NHS Foundation Trust - Cambridge University Hospitals, Royal Free London NHS Foundation Trust, Government of the United Kingdom - Portsmouth Hospitals University NHS Trust, Government of the United Kingdom - Portsmouth Hospitals University NHS Trust, University Hospitals Plymouth NHS Trust, University Hospitals Plymouth NHS Trust, Sheffield Teaching Hospitals NHS Foundation Trust, University of Sheffield, University of Sheffield and University of Cambridge - Addenbrooke's Hospital

- Department of Pathology, University Hospital Erlangen - Department of Nephropathology, Hospital Clinic of Barcelona - Nephrology Department, Guy's and St Thomas' NHS Foundation Trust, Wake Forest Baptist Medical Center, - School of Medicine, Weill Cornell Medical College - Division of Renal Pathology, Beneficência Portuguesa and Bandeirantes Hospital of São Paulo, University of Pisa - Department of Translational Research on New Technologies in Medicine and Surgery, Institute of Transplantation and High Complexity (ITAC) - Infectious Diseases Department, University of Pennsylvania - Division of Endocrinology, Diabetes & Metabolism, University of Oslo - Oslo University Hospital, Rikshospitalet, Johns Hopkins University - Department of Pathology, University of Barcelona, Faculty of Medicine, Hospital Clinic of Barcelona, Department of Pathology, Centro de Diagnostico Pathologico, Buenos Aires, Emory University - Department of Pathology and Laboratory Medicine, CHU – Hôtel DIeu, Nantes, Mayo Clinic - Division of Anatomic Pathology, Imperial College, Faculty Medicine, Dept Immunology and Inflammation, State University of New York (SUNY) - Department of Medicine, State University of New York (SUNY) - Department of Surgery, University of Minnesota - Minneapolis - Division of Solid Organ Transplantation, Newcastle Upon Tyne Hospitals NHS Foundation Trust, University of Miami - Miami Transplant Institute, CHU – Hôtel DIeu, Nantes, Emory University - Department of Surgery, Medical College of Wisconsin - Division of Transplant Surgery, Mayo Clinic - Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic - Division of Nephrology and Hypertension, - Department of Medicine, University of Wisconsin-Madison - School of Medicine and Public Health, Health Research Institute Hospital La Fe, Health Research Institute Hospital La Fe, - Department of Medicine, University of Pennsylvania - Penn Transplant Institute, - Department of Medicine, University of Minnesota - Minneapolis - Division of Solid Organ Transplantation, University of Pisa - Department of Surgery, Atrium Health Wake Forest School of Medicine and University of Wisconsin-Madison - Department of Surgery