[1] Univ Penn, Div Rheumatol, Perelman Sch Med, Philadelphia, PA 19104 USA
[2] Massachusetts Gen Hosp, Boston, MA 02114 USA
[3] Univ Washington Med, Northwest Hosp & Med Ctr, Seattle Arthrit Clin, Rheumatol, Seattle, WA USA
[4] Hosp Special Surg, 535 E 70th St, New York, NY 10021 USA
[5] Ohio State Univ, Med Ctr, Columbus, OH 43210 USA
[6] Columbia Univ, Med Ctr, New York, NY USA
[7] Univ Toronto, Univ Hlth Network, Mt Sinai Hosp, Div Rheumatol, Toronto, ON, Canada
[8] ChemoCentryx Inc, Mountain View, CA USA
[9] ChemoCentryx, Mountain View, CA USA