[1] CHILDRENS NATL MED CTR,DEPT LAB,WASHINGTON,DC
[2] GEORGE WASHINGTON UNIV,SCH MED,DEPT PATHOL,WASHINGTON,DC 20052
[3] GEORGE WASHINGTON UNIV,SCH MED,DEPT PEDIAT,WASHINGTON,DC 20052
[4] GEORGE WASHINGTON UNIV,SCH MED,DEPT PHARMACOL,WASHINGTON,DC 20052