[1] McGill Univ, Rheumatol, Montreal, PQ, Canada
[2] Univ British Columbia, Med, Vancouver, BC, Canada
[3] Univ British Columbia, Radiol, Vancouver, BC, Canada
[4] St James Hosp, Radiol, Dublin, Ireland
[5] Univ British Columbia, Pathol, Vancouver, BC, Canada
[6] McMaster Univ, Radiol, Hamilton, ON, Canada
[7] McMaster Univ, Med, Hamilton, ON, Canada
[8] Univ Calgary, Radiol, Calgary, AB, Canada
[9] Univ Calgary, Med, Calgary, AB, Canada
[10] Univ Saskatchewan, Radiol, Saskatoon, SK, Canada
[11] Univ British Columbia, Radiol, Vancouver, BC, Canada
[12] Univ Alberta, Med, Edmonton, AB, Canada
[13] Univ Saskatchewan, Med, Saskatoon, SK, Canada
[14] Univ Montreal, Med, Montreal, PQ, Canada
[15] Univ Toronto, Med, Toronto, ON, Canada
[16] Univ Toronto, Dept Radiol, Toronto, ON, Canada
[17] Univ Montreal, Radiol, Montreal, PQ, Canada