1 D. Noone, MB BCh BAO, MSc, Division of Nephrology, The Hospital for Sick Children, and Associate Professor, Department of Paediatrics, University of Toronto.
2 E.D. Silverman, MD, FRCPC, Division of Rheumatology, The Hospital for Sick Children, Senior Associate Scientist, Physiology & Experimental Medicine Program, SickKids Research Institute, and Professor of Paediatrics and Immunology, University of Toronto, Toronto, Ontario, Canada. earl.silverman@sickkids.ca.