1 Faculty of Medicine, Division of Rheumatology, University of Ottawa, Ottawa.
2 Women's College Research Institute, Women's College Hospital and the Department of Medicine, University of Toronto, Toronto.
3 University of Ottawa, Chief, Division of Pediatric Dermatology and Rheumatology, Children's Hospital of Eastern Ontario, Ottawa.
4 Faculty of Medicine, Division of Rheumatology, University of Ottawa, and the Ottawa Hospital Research Institute, Ottawa, Ontario, Canada. saydin@toh.ca.