speech therapy acoustic cerebral palsy disorders rehabilitation hydrocephalus third ventricle linguistic cognitive prosthesis opturator maxillary effectiveness glossectomee hemiglossectomy praat speech glossectomy labour law freedom accessibility discrimination disabilties rights united nations mental retardation autism multiple disabilities national trust act fletcher method ama method aao drc chaba claims hearing loss athetosis flaccid rigid spastic muscle tone chorea balliusmus hyposikesia hyperkinesia movement cerebral plasy
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