1. Toronto Scleroderma Program, Division of Rheumatology, Department of Medicine, Mount Sinai Hospital, University of Toronto, Toronto, ON M5T 1R8, Canada
2. Toronto Scleroderma Program, Schroeder Arthritis Institute, Division of Rheumatology, Department of Medicine, Toronto Western Hospital, Toronto, ON M5T 379, Canada
3. Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, ON M5T 3M6, Canada