Professor of Paediatrics and Medicine at the University of Toronto, Toronto, ON, Canada and Head of the Division of Nephrology at The Hospital for Sick Children (SickKids). He also holds positions as Senior Scientist in the SickKids Research Institute Cell Biology Program; Professor at the University of Toronto in the Departments of Paediatrics, IMS, LMP, and Medicine; and Associate Staff Physician in Medicine at UHN Toronto General Hospital. He is Guest Professor at the University of Ghent, Belgium.