Aging; Autistic Disorder/physiopathology; Adolescent; Adult; Aged; Animals; Autistic Disorder/diagnosis; Autistic Disorder/economics; Autistic Disorder/therapy; Baclofen/analogs & derivatives; Baclofen/therapeutic use; Benzamides/therapeutic use; Child; Humans; Imidazoles/therapeutic use; Intelligence Tests; Longitudinal Studies; Mice; Middle Aged; Patient Advocacy; Personal Health Services/statistics & numerical data; Personal Health Services/supply & distribution; Prevalence; Prognosis; Pyridines/therapeutic use; Speech; Young Adult