[1] CLIN UNIV BRUSSELS,HOP ERASME,DEPT HEMATOL,B-1060 BRUSSELS,BELGIUM
[2] CLIN UNIV BRUSSELS,HOP ERASME,DEPT TRANSFUS,B-1060 BRUSSELS,BELGIUM
[3] CLIN UNIV BRUSSELS,HOP ERASME,DEPT NEPHROL,B-1060 BRUSSELS,BELGIUM
[4] INST PASTEUR BRABANT,B-1040 BRUSSELS,BELGIUM