[1] Harvard Med Sch, Massachusetts Gen Hosp, Rheumatol Unit, Boston, MA USA
[2] Massachusetts Gen Hosp, Rheumatol Unit, Boston, MA 02114 USA
[3] Massachusetts Gen Hosp, Rheumatol, Boston, MA 02114 USA
[4] Massachusetts Gen Hosp, Div Rheumatol Allergy & Immunol, Boston, MA 02114 USA
[5] Xencor Inc, San Diego, CA USA