[1] UCSD, Ctr Innovat Therapy, Div Rheumatol Allergy & Immunol, La Jolla, CA USA
[2] Univ Liege, Dept Rheumatol, Liege, Belgium
[3] Univ Rochester, Sch Med & Dent, Rochester, NY USA
[4] Nuffield Orthopaed Ctr, Dept Rheumatol, Oxford OX3 7LD, England
[5] Univ Massachusetts, Sch Med, Worcester, MA USA
[6] Abbott Labs, Abbott Pk, IL 60064 USA