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