[1] Rush Univ, Dept Immunol & Microbiol, Med Ctr, Chicago, IL 60612 USA
[2] Albert Einstein Coll Med, Dept Med, Div Rheumatol, New York, NY 10461 USA
[3] Albert Einstein Coll Med, Dept Microbiol & Immunol, New York, NY 10461 USA
[4] George Mason Univ, Natl Ctr Biodef & Infect Dis, Manassas, VA 20110 USA