Angelman Syndrome: Clinical Profile
J Child Neurol 7:270-280, Zori,R.T.,et al, 1992
Unclear Speech:Recognition & Significance of Unintelligible Speech in Preschool Children
Pediatrics 82:447-452, Coplan,J.&Gleason,J.R., 1988
The Child Who is Slow to Talk
BMJ 285:671-672, Robinson,R.J., 1982