She did not think her son's allocated school, Thomas Wolsey, offered adequate support for his severe speech disorder and wanted him to go to St Mary's.

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Speech-language pathologists diagnose and treat any disorder related to speech-language communication, with about 50% working in educational services and the rest employed by health care and social assistance facilities.

FORBES: 7. Speech-Language Pathologist

Children have to go through a number of operations, as well as speech therapy and treatment, to correct the disorder.

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In a speech in Oxfordshire, Mr Cameron described the disorder that spread from London to parts of the East and West Midlands, Merseyside, Bristol, Manchester and Gloucester as "a wake-up call for our country".

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