1. Department of Paediatrics, Cumming School of Medicine University of Calgary Calgary Alberta Canada
2. Department of Community Health Sciences Cumming School of Medicine University of Calgary Calgary Alberta Canada
3. Alberta Children's Hospital Research Institute University of Calgary Calgary Alberta Canada
4. Section of Rheumatology Department of Paediatrics Cumming School of Medicine University of Calgary Calgary Alberta Canada
5. Departments of Paediatrics, Immunology and Medical Science The Hospital for Sick Children University of Toronto Toronto Ontario Canada
6. Department of Pediatric Immunology and Rheumatology Wilhelmina Children's Hospital / UMC Utrech Utrecht The Netherlands
7. Faculty of Medicine Utrecht University Utrecht The Netherlands
8. Department of Health Technology and Services Research Faculty of Behavioural, Management and Social Sciences Technical Medical Centre University of Twente Enschede The Netherlands