[1] Northwestern Univ, Feinberg Sch Med, Div Immunotherapy, Chicago, IL 60611 USA
[2] Univ Calif San Diego, Div Rheumatol, San Diego, CA 92103 USA
[3] Univ N Carolina, Div Rheumatol, Chapel Hill, NC USA
[4] Vanderbilt Univ, Div Rheumatol, Nashville, TN USA
[5] Univ Pittsburgh, Sch Med, Div Hematol Oncol, Pittsburgh, PA USA
[6] Univ Massachusetts, Div Hematol Oncol, Worcester, MA USA
[7] Free Univ Berlin, Div Rheumatol, Charite Hosp, D-1000 Berlin, Germany
[8] Free Univ Berlin, Div Bone Marrow Transplantat, Charite Hosp, D-1000 Berlin, Germany
[9] Univ Colorado, Div Rheumatol, Denver, CO 80202 USA
[10] Univ Penn, Dept Radiat Oncol, Philadelphia, PA 19104 USA
[11] Sheffield Teaching Hosp NHS Trust, Sheffield, S Yorkshire, England
[12] Univ Sheffield, Blood & Marrow Transplant Programme, Sheffield, S Yorkshire, England