[1] Univ Washington, Div Rheumatol, Seattle, WA 98195 USA
[2] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA
[3] Univ Washington, Dept Bioengn, Seattle, WA 98195 USA
[4] Univ Washington, Seattle, WA 98195 USA
[5] Univ Washington, Dept Chem, Seattle, WA 98195 USA
[6] Univ Washington, Dept Med, Div Rheumatol, Seattle, WA 98195 USA