1. Division of Rheumatology, Western University , London, ON, Canada
2. Division of General Internal Medicine-Windsor Campus, Western University , London, ON, Canada
3. Division of Systemic Autoimmune Diseases and Critical Care, Hospital Clinic de Barcelona , Barcelona, Spain
4. Division of Rheumatology, Jewish General Hospital, McGill University , Montreal, QC, Canada
5. Division of Pathology, Western University , London, ON, Canada
6. Muscle Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases , Bethesda, MD, USA
7. Department of Neurology, Johns Hopkins University School of Medicine , Baltimore, MD, USA