[1] ROYAL CHILDRENS HOSP,BIRTH DEFECTS RES INST,PARKVILLE,VIC 3052,AUSTRALIA
[2] MCGILL UNIV,DEPT PHARMACOL & THERAPEUT,MONTREAL H3A 2T5,QUEBEC,CANADA
[3] ASAHIKAWA MED COLL,DEPT BIOCHEM,ASAHIKAWA 07811,JAPAN
[4] ROYAL CHILDRENS HOSP,DEPT PATHOL,PARKVILLE,VIC 3052,AUSTRALIA