[1] CHILDRENS HOSP MED CTR,CTR MENTAL RETARDAT,BOSTON,MA 02115
[2] CHILDRENS HOSP MED CTR,BIRTH DEFECTS SERV,AMBULATORY MED,BOSTON,MA 02115
[3] HARVARD UNIV,SCH MED,DEPT PEDIAT,BOSTON,MA 02115
[4] HARVARD UNIV,SCH MED,DEPT GENET,BOSTON,MA 02115
[5] HOWARD HUGHES MED INST,BOSTON,MA
[6] UNIV LOUISVILLE,HLTH SCI CTR,SCH MED,CTR CHILD EVAL,DEPT PEDIAT,LOUISVILLE,KY 40202
[7] DARTMOUTH COLL,HITCHCOCK MED CTR,DARTMOUTH MED SCH,DEPT MATERNAL & CHILD HLTH,HANOVER,NH 03756
[8] DARTMOUTH COLL,HITCHCOCK MED CTR,DARTMOUTH MED SCH,DEPT PATHOL,HANOVER,NH 03756