[1] Univ Laval, CHUQ CHUL Res Ctr, Quebec City, PQ, Canada
[2] CHUV, Lausanne, Switzerland
[3] San Diego Arthrit Med Clin, San Diego, CA USA
[4] Charite Teaching Hosp Schlosspk Klin, Berlin, Germany
[5] Hop Lariboisiere, F-75475 Paris, France
[6] VA Med Ctr, Philadelphia, PA USA
[7] Univ Penn, Philadelphia, PA 19104 USA
[8] Novartis Pharma AG, Basel, Switzerland
[9] UMDNJ Robert Wood Johnson Med Sch, New Brunswick, NJ USA