1. Institute for Biodiagnostics, National Research Council Canada, 435 Ellice Avenue, Winnipeg, Manitoba R3B 1Y6, Canada (H.H.E., M.J., H.H.M.); and Section of Rheumatology, Faculty of Medicine, University of Manitoba, St. Boniface General Hospital, 351 Tache Avenue, Winnipeg, Manitoba R2H 2A6, Canada (G.T.D.T.)