Mackenzie is partially deaf, wears a hearing aid and communicates through sign language.

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Mawle - who is partially deaf and dyslexic - explains that he did not read Lawrence's novels as he finds reading "quite strenuous".

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In Guatemala (where Dave phoned me from for this interview) the company is setting up a clinic to help people who are born with cleft palates and who are partially deaf.

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Reality called again five years ago when doctors found a brain tumor, which left her partially blind and deaf.

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