[1] Univ Chicago, Chicago, IL 60637 USA
[2] Arthrit Rheumatism Associates, Wheaton, MD USA
[3] Reliant Med Grp, Worcester, MA USA
[4] Kaiser Fdn Hosp, San Francisco, CA USA
[5] Hosp Gen Mexico City, Mexico City, DF, Mexico
[6] Savient Pharmaceut Inc, E Brunswick, NJ USA
[7] Univ Michigan, Ann Arbor, MI 48109 USA
[8] Duke Univ, Med Ctr, Durham, NC USA