aDepartment of Microbiology, Immunology and Transplantation, Nephrology and Renal Transplantation Research Group, KU Leuven

bDepartment of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium

cDepartment of Kidney Diseases, Aarhus University Hospital, Aarhus, Denmark

dDepartment of Clinical Chemistry, University of Liege, CHU de Liege, Liege, Belgium

Correspondence to Pieter Evenepoel, MD, PhD, Dienst nefrologie, Universitair Ziekenhuis Gasthuisberg, Herestraat 49, B-3000 Leuven, Belgium. Tel: +32 16 344591; fax: +32 16 344599; e-mail: [email protected]