[1] HANNOVER MED SCH,HANNOVER,GERMANY
[2] CHU GRENOBLE,F-38043 GRENOBLE,FRANCE
[3] UNIV LOUVAIN,SCH MED,BRUSSELS,BELGIUM
[4] UNIV VIENNA,VIENNA,AUSTRIA
[5] HOSP GEN UNIV GREGORIO MARANON,DEPT NEPHROL,MADRID,SPAIN
[6] HOP CONCEPTION,NEPHROL DIALYSIS UNIT,MARSEILLE,FRANCE
[7] UNIV HOSP BERN,MED POLICLIN,BERN,SWITZERLAND
[8] HOP EDOUARD HERRIOT,PEDIAT RENAL UNIT,LYON,FRANCE
[9] LAIKON GEN HOSP,DIV NEPHROL,ATHENS,GREECE
[10] UNIV BARI,INST NEPHROL,BARI,ITALY
[11] TUFTS UNIV NEW ENGLAND MED CTR,DIV NEPHROL,BOSTON,MA 02111
[12] UNIV PARMA,INST MED & NEPHROL,I-43100 PARMA,ITALY
[13] ASSOC AMER MED COLL,WASHINGTON,DC 20036
[14] TUFTS UNIV,SCH MED,BOSTON,MA 02111
[15] CHURCHILL OXFORD RADCLIFFE HOSP,RENAL UNIT,OXFORD,ENGLAND
[16] UNIV HOSP IOANNINA,IOANNINA,GREECE
[17] HOP TENON,F-75970 PARIS,FRANCE
[18] UNIV PADUA,PADUA,ITALY
[19] MARIO NEGRI INST PHARMACOL RES,I-24100 BERGAMO,ITALY
[20] BEAUMONT HOSP,DUBLIN 9,IRELAND
[21] ST JAMESS UNIV HOSP,LEEDS,W YORKSHIRE,ENGLAND