1 University of Sherbrooke, Department of Medicine, 375 rue Argyll, Sherbrooke, QC, Canada J1J 3H5. Electronic address: tamas.fulop@usherbrooke.ca.
2 Yale University School of Medicine, Department of Internal Medicine, Section of Rheumatology, 300 Cedar Street, TAC S-413, New Haven, CT 06520-8020, USA. Electronic address: ruth.montgomery@yale.edu.