The Child Who is Slow to Talk
BMJ 285:671-672, Robinson,R.J., 1982
Identifying and Managing Common Childhood Language and Speech Impairments
BMJ 350:h2318, Reilly, S.,et al, 2015
Folic Acid Supplements in Pregnancy and Severe Language Delay in Children
JAMA 36:1566-1573, Roth, C.,et al, 2011
Diagnostic Criteria for Rett Syndrome
The Rett Syndrome Diagnostic Criteria Work Group, Ann Neurol 23:425-4281988., , 1988
Pediatric Neurology
Psych Annals 2:1, , 1972