[1] UNIV CAMBRIDGE, SCH CLIN, CAMBRIDGE CB2 1TN, ENGLAND
[2] CHU ANGERS, ANGERS, FRANCE
[3] HOP HENRI MONDOR, F-94010 CRETEIL, FRANCE
[4] HOP ST MARGUERITE, F-13277 MARSEILLE, FRANCE
[5] ST LUC UNIV HOSP, BRUSSELS, BELGIUM
[6] UNIV SHEFFIELD, SHEFFIELD, S YORKSHIRE, ENGLAND
[7] UNIV TURIN, I-10149 TURIN, ITALY
[8] POLICLIN UNIV, SIENA, ITALY
[9] UNIV AMSTERDAM, ACAD MED CTR, NL-1105 AZ AMSTERDAM, NETHERLANDS
[10] UNIV ZIEKENHUIS, GHENT, BELGIUM
[11] STAATLICHEN RHEUMAKRANKENHAUS, BADEN BADEN, GERMANY
[12] POLICLIN UMBERTO 1, MED CLIN 2, I-00161 ROME, ITALY
[13] UNIV ABERDEEN, ABERDEEN, SCOTLAND
[14] UNIV KOLIN, AKAD LEHRKRANKENHAUS, KOLIN, GERMANY
[15] FREE UNIV BRUSSELS, BRUSSELS, BELGIUM
[16] UNIV HEIDELBERG, MED KLIN, D-6900 HEIDELBERG, GERMANY
[17] CTR HOSP UNIV LIEGE, LIEGE, BELGIUM