[1] Stanford Univ, Div Immunol Rheumatol, Palo Alto, CA 94304 USA
[2] UZ Leuven, Leuven, Belgium
[3] Unidad Reumatol Amer SCP, Merida, Yucatan, Mexico
[4] Swedish Med Ctr, Seattle, WA USA
[5] Univ Washington, Seattle, WA 98195 USA
[6] Univ Toronto, Toronto Western Hosp, Dept Med, Toronto, ON, Canada
[7] Pfizer Inc, Collegeville, PA USA
[8] Pfizer Inc, Groton, CT 06340 USA
[9] Pfizer Inc, New York, NY USA