[1] HOP NECKER ENFANTS MALAD,INSERM,U12,GENET MED SERV,PARIS,FRANCE
[2] GUYS HOSP,PAEDIAT RES UNIT,SUPRAREG LAB GENET ENZYME DEFECTS,LONDON SE1 9RT,ENGLAND
[3] GUYS HOSP,DEPT CLIN CHEM,LONDON SE1 9RT,ENGLAND
[4] GUYS HOSP,INST CHILD HLTH,DIV BIOCHEM & GENET,ENZYME LAB,LONDON SE1 9RT,ENGLAND
[5] UNIV MUNICH,DR VON HAUMERSCHER KINDERSPITAL,KINDERKLIN,MUNICH,GERMANY
[6] LEIDEN UNIV,DEPT HUMAN GENET,2300 RA LEIDEN,NETHERLANDS
[7] ERASMUS UNIV ROTTERDAM,DEPT CLIN GENET,3000 DR ROTTERDAM,NETHERLANDS
[8] INSELSPITAL BERN,DEPT CLIN CHEM,CH-3010 BERN,SWITZERLAND
[9] IST CLIN,BIOCHIM LAB,GENOA,ITALY