[1] UNIV CATHOLIQUE LOUVAIN,ICP,UNIT EXPTL MED,B-1200 BRUSSELS,BELGIUM
[2] UNIV CATHOLIQUE LOUVAIN,HOP ST LUC,PATHOL LAB,B-1200 BRUSSELS,BELGIUM
[3] UNIV CATHOLIQUE LOUVAIN,EXPTL MED UNIT,B-1200 BRUSSELS,BELGIUM
[4] INT INST CELLULAR & MOLEC PATHOL,B-1200 BRUSSELS,BELGIUM
[5] UNIFORMED SERV UNIV HLTH SCI,DEPT PATHOL,BETHESDA,MD 20814