1. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
2. Department of Clinical Biochemistry, University Health Network, Toronto, Ontario, Canada
3. Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada
4. professor and researcher in autoimmune diseases, Nijmegen Centre for Molecular Life Sciences, Radbound University, Nijmegen, the Netherlands
5. K.U. Leuven Research Professor, Department of Rheumatology, Katholieke Universiteit Leuven, Leuven, Belgium
6. rheumatologist and researcher in the Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, Bethesda, MD