[1] Univ Chicago, Chicago, IL 60637 USA
[2] Univ Oklahoma, Oklahoma Med Res Fdn, Dept Med, Oklahoma City, OK USA
[3] Uppsala Univ, Uppsala, Sweden
[4] Oklahoma Med Res Fdn, Uppsala, Sweden
[5] Univ London Imperial Coll Sci Technol & Med, London, England
[6] Univ Alabama, Birmingham, AL USA
[7] Hosp Special Surg, Mary Kirkland Ctr Lupus Res, New York, NY 10021 USA
[8] US Dept Vet Affairs, Med Ctr, Oklahoma City, OK USA