Nobby Stiles' son says he has "no doubt" heading balls contributed to his father's death after a post-mortem found the former footballer's brain was affected by a dementia believed to be caused by repeated blows.

Nobby Stiles' son says he has "no doubt" heading balls contributed to his father's death after a post-mortem found the former footballer's brain was affected by a dementia believed to be caused by repeated blows.

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