title: Dr. Tselios, et al reply.
authors: Centre for Prognosis Studies in the Rheumatic Diseases, University of Toronto Lupus Clinic, University Health Network;
authors: Konstantinos
authors: K
authors: Tselios
authors: Centre for Prognosis Studies in the Rheumatic Diseases, University of Toronto Lupus Clinic, University Health Network;
authors: Dafna D
authors: DD
authors: Gladman
authors: Centre for Prognosis Studies in the Rheumatic Diseases, University of Toronto Lupus Clinic, University Health Network;
authors: Jiandong
authors: J
authors: Su
authors: Centre for Prognosis Studies in the Rheumatic Diseases, University of Toronto Lupus Clinic, University Health Network, Toronto, Ontario, Canada. m.urowitz@utoronto.ca.
authors: Murray B
authors: MB
authors: Urowitz