1 Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.
2 Department of Nephrology, University Hospitals Leuven, Leuven, Belgium.
3 Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.
4 Paris Translational Research Centre for Organ Transplantation, Université de Paris, INSERM U970, University of Paris, Paris and Necker Hospital, Assistance Publique - Hopitaux de Paris, Paris, France.
5 Department of Immunology and Inflammation, Imperial College London and North West London Pathology, London, UK.
6 Department of Laboratory Medicine & Pathology, University of Alberta, Edmonton, Canada.