Figure 1

Identification of study population, children with and without neurodevelopmental disorders (F70-Mental Retardation, F84-Pervasive Developmental Disorders, F90-Hyperkinetic Disorder), Mexico City, Mexico.

Identification of study population, children with and without neurodevelopmental disorders (F70-Mental Retardation, F84-Pervasive Developmental Disorders, F90-Hyperkinetic Disorder), Mexico City, Mexico.