[1] ST LOUIS CHILDRENS HOSP,DEPT PEDIAT,DIV NEONATAL,ST LOUIS,MO 63110
[2] ST LOUIS CHILDRENS HOSP,DIV PEDIAT CARDIOL,ST LOUIS,MO 63110
[3] WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
[4] WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT DEPT PEDIAT,ST LOUIS,MO 63130