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Subjects: Incidence; Children; AdolescentsNational Health Interview Survey
Subjects: Attendance Patterns; Developmental Disabilities; National SurveysNational Health Interview Survey
Subjects: *CHRONIC diseases; *DISEASE prevalence; *PUBLIC healthUNITED StatesUNITED States. Dept. of Health & Human Services
Subjects: PUBLIC health; AGE distribution; POLICY sciencesUNITED States