[1] Queen Elizabeth 2 Hlth Sci Ctr, Div Rheumatol, Dept Med, Halifax, NS, Canada
[2] Queen Elizabeth 2 Hlth Sci Ctr, Div Anat Pathol, Dept Pathol, Halifax, NS, Canada
[3] Queen Elizabeth 2 Hlth Sci Ctr, Dept Diagnost Imaging, Halifax, NS, Canada
[4] Dalhousie Univ, Halifax, NS B3H 3J5, Canada