[1] HOP DEBROUSSE,SERV BIOCHIM,F-69322 LYON 1,FRANCE
[2] UNIV UTRECHT,CHILDRENS HOSP,HET WILHELMINA KINDERZIEKENHUIS,3512 LK UTRECHT,NETHERLANDS
[3] UNIV FREIBURG,KINDERKLIN,D-7800 FREIBURG,FED REP GER
[4] HOSP SICK CHILDREN,TORONTO M5G 1X8,ONTARIO,CANADA
[5] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,CHILDRENS MED CTR,DEPT PEDIAT,RICHMOND,VA 23298
[6] CHR LILLE,SERV PEDIAT,F-59037 LILLE,FRANCE