Subjects: Incidence; Children; AdolescentsNational Health Interview Survey
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Subjects: Attendance Patterns; Developmental Disabilities; National SurveysNational Health Interview Survey
Subjects: Health Services; Costs; ChildrenNational Health Interview Survey
Subjects: Autism; Pervasive Developmental Disorders; Access to Health CareNational Health Interview Survey
Subjects: Stuttering; Comorbidity; Developmental DisabilitiesNational Health Interview Survey
Subjects: Children; Adolescents; Developmental DisabilitiesNational Health Interview Survey